Cb - Cn
| Celosia argentea | Brandschopf Silber | Silver Cockscomb | Amaranthaceae |
| Centaurea acaulis | Flockenblume Stängellose | Aucaulescent Star Thistle | Asteraceae |
| Centaurea achaia | Flockenblume Achaische | Achaean Star Thistle | Asteraceae |
| Centaurea acicularis | Flockenblume Nadel | Needle Knapweed | Asteraceae |
| Centaurea adamovicii | Flockenblume Adamovic | Adamovic Knapweed | Asteraceae |
| Centaurea aegialophila | Flockenblume Ägäis | Aegean Knapweed | Asteraceae |
| Centaurea aegusae | Flockenblume Ägadische |
Egadi Knapweed |
Asteraceae |
| Centaurea aeolica | Flockenblume Äolische | Aeolian Knapweed | Asteraceae |
| Centaurea aetaliae | Flockenblume Elba | Elba Knapweed | Asteraceae |
| Centaurea aetolica | Flockenblume Ätolische | Aetolian Knapweed | Asteraceae |
| Centaurea affinis | Flockenblume Verwandte | Related Knapweed | Asteraceae |
| Centaurea alba | Flockenblume Weiße | White Knapweed | Asteraceae |
| Centaurea albanica | Flockenblume Albanische | Albanian Knapweed | Asteraceae |
| Centaurea ambigua | Flockenblume Zweifelhafte | Doubtful Knapweed | Asteraceae |
| Centaurea amblensis | Flockenblume Valle de Amblés | Valle de Amblés Knapweed | Asteraceae |
| Centaurea antennata | Flockenblume Antennen | Antenna Knapwood | Asteraceae |
| Centaurea aplolepa ssp. aplolepa | Flockenblume Ligurische | Ligurian Knapweed | Asteraceae |
| Centaurea aplolepa ssp. levantina | Flockenblume Riviera die Levante | Riviera di Levante Knapweed | Asteraceae |
| Centaurea arachnoidea | Flockenblume Spinnwebige | Cobweb Knapweed | Asteraceae |
| Centaurea argecillensis | Flockenblume Argecilla | Argecilla Star Thistle | Asteraceae |
| Centaurea argentea | Flockenblume Silber | Silver Knapweed | Asteraceae |
| Centaurea aristata | Flockenblume Grannen | Aristate Knapweed | Asteraceae |
| Centaurea aspera | Flockenblume Sparrige | Rough Star Thistle | Asteraceae |
| Centaurea athoa ssp athoa | Flockenblume Athos | Athos Knapweed | Asteraceae |
| Centaurea athoa ssp. chelmea | Flockenblume Mt. Chelmos | Mt. Chelmos Knapweed | Asteraceae |
| Centaurea athoa ssp parnonia | Flockenblume Mt. Parnon | Mt. Parnon Knapweed | Asteraceae |
| Centaurea atropurpurea | Flockenblume Dunkelpurpurrote | Dark Purple Knapweed | Asteraceae |
| Centaurea attica | Flockenblume Attische | Attic Knapweed | Asteraceae |
| Centaurea attica ssp. megarensis | Flockenblume Megara | Megara Knapweed | Asteraceae |
| Centaurea austrobalcanica | Flockenblume Südliche Balkan- | Southern Balcan Knapweed | Asteraceae |
| Centaurea avilae | Flockenblume Avila | Avila Knapweed | Asteraceae |
| Centaurea axillaris | Blauflockenblume Geflügelte | Winged Knapweed | Asteraceae |
| Centaurea baldaccii | Flockenblume Baldaccis | Baldacci's Knapweed | Asteraceae |
| Centaurea barrasii | Flockenblume Cabo de Gata | Cabo de Gata Star Thistle | Asteraceae |
| Centaurea beltrani | Flockenblume Beltrans | Beltran's Knapweed | Asteraceae |
| Centaurea benedicta | Benediktenkraut | Blessed Knapweed | Asteraceae |
| Centaurea bethurica | Flockenblume Beturische | Beturian Knapweed | Asteraceae |
| Centaurea bofilliana | Flockenblume Bofills | Bofill's Star Thistle | Asteraceae |
| Centaurea boissieri ssp. boissieri | Flockenblume Boissiers | Boissier's Knapweed | Asteraceae |
| Centaurea boissieri ssp. funkii | Flockenblume Funks | Funk's Knapweed | Asteraceae |
| Centaurea boissieri ssp. integrifolia | Flockenblume Niederliegende | Entiere- leaved Knapweed | Asteraceae |
| Centaurea boissieri ssp. mariolensis | Flockenblume Sierra de Mariola | Sierra de Mariola Knapweed | Asteraceae |
| Centaurea boissieri ssp. pinae | Flockenblume Sierra de Pina | Sierra de Pina Knapweed | Asteraceae |
| Centaurea boissieri ssp. prostrata | Flockenblume Niederliegende | Prostrate Knapweed | Asteraceae |
| Centaurea boissieri ssp. willkommii | Flockenblume Willkomms | Willkomm's Knapweed | Asteraceae |
| Centaurea bombycina | Flockenblume Seidige | Silky Star Thistle | Asteraceae |
| Centaurea borjae | Flockenblume Borjas | Borja's Star Thistle | Asteraceae |
| Centaurea bourgaei | Flockenblume Bourgeaus | Bourgeau's Knapweed | Asteraceae |
| Centaurea bovina | Flockenblume Rinder | Cattle Knapweed | Asteraceae |
| Centaurea brunnea | Flockenblume Bräunliche | Brownish Knapweed | Asteraceae |
| Centaurea bugellensis | Flockenblume Biella | Biella Knapweed | Asteraceae |
| Centaurea busambaraensis | Flockenblume Busambra | Busambra Knapweed | Asteraceae |
| Centaurea calcitrapa | Flockenblume Stern | Red Star Thistle | Asteraceae |
| Centaurea calocephala | Flockenblume Schönköpfige | Beuatiful- headed Knapweed | Asteraceae |
| Centaurea cariensis ssp. maculiceps | Flockenblume Geflecktköpfige Karische | Spot- headed Carian Knapweed | Asteraceae |
| Centaurea carratracensis | Flockenblume Sierra Carratraca | Sierra Carratraca Knapweed | Asteraceae |
| Centaurea carystea | Flockenblume Karystos | Karystos Knapweed | Asteraceae |
| Centaurea castellanoides | Flockenblume Castellanaähnliche | Castellana- like Knapweed | Asteraceae |
| Centaurea centauroides | Flockenblume Basilikata | Basilicata Knapweed | Asteraceae |
| Centaurea cephalariifolia | Flockenblume Schuppenkopfblättrige | Cephalaria- leaved Knapweed | Asteraceae |
| Centaurea ceratophylla | Flockenblume Hornblättrige | Horn- leaved Knapweed | Asteraceae |
| Centaurea chalcidicacea | Flockenblume Chalkidiki | Chalkidiki Knapweed | Asteraceae |
| Centaurea charrelii | Flockenblume Charrels | Charrel's Knapweed | Asteraceae |
| Centaurea chrysocephala | Flockenblume Meteora | Meteora Knapweed | Asteraceae |
| Centaurea cineraria | Flockenblume Aschgraue | Cinereous Knapweed | Asteraceae |
| Centaurea cithaeronea | Flockenblume Kithairon | Kithairon Knapweed | Asteraceae |
| Centaurea citricolor | Flockenblume Zitronenfarbene | Lemon- colored Knapweed | Asteraceae |
| Centaurea clementei | Flockenblume Clementes | Clemente's Knapweed | Asteraceae |
| Centaurea collina | Flockenblume Hügel | Hill Knapweed | Asteraceae |
| Centaurea corcubionensis | Flockenblume Corcubion | Corcubion Knapweed | Asteraceae |
| Centaurea cordubensis | Flockenblume Cordoba | Cordoba Knapweed | Asteraceae |
| Centaurea corymbosa | Flockenblume Schirntraubige | Corymbose Knapweed | Asteraceae |
| Centaurea costae | Flockenblume Costas | Costa's Knapweed | Asteraceae |
| Centaurea cristata | Flockenblume Weichschuppige | Crested Knapweed | Asteraceae |
| Centaurea cuneifolia | Flockenblume Keilblättrige | Wedge- Leaved Knapweed | Asteraceae |
| Centaurea cyanus | Kornblume Gewöhnliche | Common Cornflower | Asteraceae |
| Centaurea cylindrocephala | Flockenblume Zylinderköpfige | Cylinder- headed Knapweed | Asteraceae |
| Centaurea decipiens | Flockenblume Täuschende | Fooling Knapweed | Asteraceae |
| Centaurea delucae | Flockenblume De Lucas | De Luca's Knapweed | Asteraceae |
| Centaurea depressa | Blauflockenblume Niedere | Low Cornflower | Asteraceae |
| Centaurea deustiformis | Flockenblume Verbranntähnliche | Burned- like Knapweed | Asteraceae |
| Centaurea deusta | Flockenblume Verbrannte | Burned Knapweed | Asteraceae |
| Centaurea devasiana | Flockenblume Mt. Devas | Mt. Devas Knapweed | Asteraceae |
| Centaurea dichroantha | Flockenblume Zweifarbige | Two- coloured Knapweed | Asteraceae |
| Centaurea diffusa | Flockenblume Sparrige | Diffuse Knapweed | Asteraceae |
| Centaurea diluta | Flockenblume Trübe | North African Knapweed | Asteraceae |
| Centaurea diomedea | Flockenblume Tremiti | Tremiti Knapweed | Asteraceae |
| Centaurea dracunculifolia | Flockenblume Drachenblättrige | Dragon Knapweed | Asteraceae |
| Centaurea ebenoides | Flockenblume Ebenholzstrauchähnliche | Ebony- like Knapweed | Asteraceae |
| Centaurea emigrantis | Flockenblume Ausgewanderte | Emigrated Knapweed | Asteraceae |
| Centaurea emporitana | Flockenblume Ampurische | Ampurian Knapweed | Asteraceae |
| Centaurea epirota | Flockenblume Epirus | Epirus Knapweed | Asteraceae |
| Centaurea eriophora | Flockenblume Wollige | Wooly Knapweed | Asteraceae |
| Centaurea erycina | Flockenblume Erice | Erice Knapweed | Asteraceae |
| Centaurea euboica | Flockenblume Euböa | Evvian Star Thistle | Asteraceae |
| Centaurea exarata | Flockenblume Furchen | Furrowed Knapwood | Asteraceae |
| Centaurea fabregatii | Flockenblume Fabregats | Fabregat's Knapweed | Asteraceae |
| Centaurea ferulacea | Flockenblume Fenchelblättrige | Fennel- leaved Knapweed | Asteraceae |
| Centaurea filiformis | Flockenblume Fadenblättrige | Filiform Knapweed | Asteraceae |
| Centaurea finazzeri ssp finazzeri | Flockenblume Finazzers | Finazzer's Knapweed | Asteraceae |
| Centaurea finazzeri ssp kozanii | Flockenblume Kozani | Kozani Knapweed | Asteraceae |
| Centaurea flosculosa | Flockenblume Kleinblütige | Small- flowered Knapweed | Asteraceae |
| Centaurea formanekii | Flockenblume Formaneks | Formanek's Knapweed | Asteraceae |
| Centaurea francoi | Flockenblume Safrangelbe | Saffron Knapweed | Asteraceae |
| Centaurea gabrielis- blancae | Flockenblume Gabriel Blancas | Gabriel Blanca's Knapweed | Asteraceae |
| Centaurea gadorensis | Flockenblume Sierra de Gador | Sierra Gador Knapweed | Asteraceae |
| Centaurea galicicae | Flockenblume Mt. Galicica | Mt. Galicica Knapweed | Asteraceae |
| Centaurea gallaecica | Flockenblume Galicische | Galician Knapweed | Asteraceae |
| Centaurea genesii lopezii | Flockenblume Gines Lopez | Gines Lopez Star Thistle | Asteraceae |
| Centaurea giardinae | Flockenblume Giardinas | Giardina's Knapweed | Asteraceae |
| Centaurea graeca | Flockenblume Griechische | Greek Knapweed | Asteraceae |
| Centaurea graminifolia | Flockenblume Grasblättrige | Gras- leaved Knapweed | Asteraceae |
| Centaurea granatensis | Flockenblume Granada | Granada Knapweed | Asteraceae |
| Centaurea grbavacensis | Flockenblume Grbavac | Grbavac Knapweed | Asteraceae |
| Centaurea greuteri | Flockenblume Greuters | Greuter's Knapweed | Asteraceae |
| Centaurea grisebachii | Flockenblume Grisebachs | Grisebach's Knapweed | Asteraceae |
| Centaurea gussonei | Flockenblume Gussones | Gussone's Knapweed | Asteraceae |
| Centaurea gymnocarpa | Flockenblume Capraia | Capraia Knapweed | Asteraceae |
| Centaurea haenseleri | Flockenblume Haenslers | Haensler's Star Thistle | Asteraceae |
| Centaurea hanrii | Flockenblume Hanrys | Hanry's Knapweed | Asteraceae |
| Centaurea heldreichii | Flockenblume Heldreichs | Heldreich's Knapweed | Asteraceae |
| Centaurea heywoodiana | Flockenblume Heywoods | Heywood's Knapweed | Asteraceae |
| Centaurea horrida | Flockenblume Schreckliche | Horrible Knapweed | Asteraceae |
| Centaurea huljakii | Flockenblume Huljaks | Huljak's Knapweed | Asteraceae |
| Centaurea hyalolepis | Flockenblume Bleiche | Pale Star Thistle | Asteraceae |
| Centaurea hymettia | Flockenblume Mt. Hymettos | Mt. Hymettos Knapweed | Asteraceae |
| Centaurea hyssopifolia | Flockenblume Ysopblättrige | Hyssop-leaved Knapweed | Asteraceae |
| Centaurea iberica | Flockenblume Iberische | Iberian Knapweed | Asteraceae |
| Centaurea idaea | Flockenblume Ida | Ida Star Thistle | Asteraceae |
| Centaurea immanuelis- loewii | Flockenblume Immanuel Löws | Immanuel Loew's Knapweed | Asteraceae |
| Centaurea incompleta | Flockenblume Unvollständige | Incomplete Knapweed | Asteraceae |
| Centaurea involucrata | Flockenblume Behüllte | Involucrate Knapweed | Asteraceae |
| Centaurea ipecensis | Flockenblume Peja | Peja Knapweed | Asteraceae |
| Centaurea jacea | Flockenblume Wiesen | Brown Knapweed | Asteraceae |
| Centaurea jaennensis | Flockenblume Jaen | Jaen Knapweed | Asteraceae |
| Centaurea janeri | Flockenblume Janers | Janer's Knapweed | Asteraceae |
| Centaurea japygica | Flockenblume Apulische | Apulian Knapweed | Asteraceae |
| Centaurea johnseniana | Flockenblume Johnsens | Johnsen's Knapweed | Asteraceae |
| Centaurea jordaniana | Flockenblume Jordans | Jordan's Knapweed | Asteraceae |
| Centaurea jordaniana ssp. balbisiana | Flockenblume Balbis' | Balbis's Knapweed | Asteraceae |
| Centaurea kalambakensis | Flockenblume Kalambaka | Kalambaka Knapweed | Asteraceae |
| Centaurea kartschiana | Flockenblume Istrianer | Istrian Knapweed | Asteraceae |
| Centaurea kotschyana | Flockenblume Kotschys | Kotschy's Knapweed | Asteraceae |
| Centaurea kunkelii | Flockenblume Kunkels | Kunkel's Knapweed | Asteraceae |
| Centaurea lacaitae | Flockenblume Lacaitas | Lacaita's Knapweed | Asteraceae |
| Centaurea lacerata | Flockenblume Zerschlitzte | Lacerate Knapweed | Asteraceae |
| Centaurea laconica ssp. laconica | Flockenblume Lakonische | Laconian Star Thistle | Asteraceae |
| Centaurea laconica ssp. lineariloba | Flockenblume Schmallappige | Narrow- lobed Star Thistle | Asteraceae |
| Centaurea lactiflora | Flockenblume Milchweiße | Milk- white Knapweed | Asteraceae |
| Centaurea lactucifolia | Flockenblume Musen | Parnassos Knapweed | Asteraceae |
| Centaurea lagascana | Flockenblume Lagascas | Lagasca's Star Thistle | Asteraceae |
| Centaurea langei | Flockenblume Langes | Lange's Knapweed | Asteraceae |
| Centaurea lainzii | Flockenblume Lainz' | Lainz's Star Thistle | Asteraceae |
| Centaurea lancifolia | Flockenblume Lanzettblättrige | Lance- leaved Knapweed | Asteraceae |
| Centaurea laureotica | Flockenblume Lavreotiki | Lavreotiki Knapweed | Asteraceae |
| Centaurea legionis- septimae | Flockenblume Sieben Legionen | Seven- legion Knapweed | Asteraceae |
| Centaurea leonidia | Flockenblume Leonidio | Leonidio Knapweed | Asteraceae |
| Centaurea leucadea | Flockenblume Capo di Leuca | Capo di Leuca Knapweed | Asteraceae |
| Centaurea leucomalla | Flockenblume Weißwollige | White- wooly Knapweed | Asteraceae |
| Centaurea leucophaea | Flockenblume Weißfilzige | Whitish Leaved Knapweed | Asteraceae |
| Centaurea limbata | Flockenblume Berandete | Fringed Knapweed | Asteraceae |
| Centaurea linifolia | Flockenblume Schmalblättrige | Narrow-leaved Knapweed | Asteraceae |
| Centaurea litochorea | Flockenblume Litochorion | Litochorion Knapweed | Asteraceae |
| Centaurea lusitanica | Flockenblume Portugiesische | Portuguese Star Thistle | Asteraceae |
| Centaurea macedonica | Flockenblume Mazedonische | Macedonian Star Thistle | Asteraceae |
| Centaurea macroacantha | Flockenblume Großdornige | Large- spine Knapweed | Asteraceae |
| Centaurea macroptilon | Flockenblume Fiederschuppen | Large- fimbriate Knapweed | Asteraceae |
| Centaurea magistrorum | Flockenblume Lehrer | Teachers Knapweed | Asteraceae |
| Centaurea malacitana | Flockenblume Malaga | Malaga Star Thistle | Asteraceae |
| Centaurea mannagettae | Flockenblume Mannagettas | Mannagetta's Knapweed | Asteraceae |
| Centaurea mariana | Flockenblume Marien | Mary's Star Thistle | Asteraceae |
| Centaurea marmorea | Flockenblume Marmorierte | Marbled Knapweed | Asteraceae |
| Centaurea marrocana | Flockenblume Marrokanische | Morrocan Star Thistle | Asteraceae |
| Centaurea melitensis | Flockenblume Malta | Maltese Star Thistle | Asteraceae |
| Centaurea messenicolasiana | Flockenblume Messenicolas | Messenicolas Knapweed | Asteraceae |
| Centaurea microptilon | Flockenblume Kleinfederige | Small- fimbriate Knapweed | Asteraceae |
| Centaurea molesworthiae | Flockenblume Moleworths | Moleworth's Knapweed | Asteraceae |
| Centaurea montaltensis | Flockenblume Montalto | Montalto Knapweed | Asteraceae |
| Centaurea montana | Blauflockenblume Berg | Mountain Cornflower | Asteraceae |
| Centaurea monticola | Flockenblume Berg | Mountain Knapweed | Asteraceae |
| Centaurea montis- borlae | Flockenblume Mt. Borla | Mt. Borla Knapweed | Asteraceae |
| Centaurea musakii | Flockenblume Musaki | Musaki Knapweed | Asteraceae |
| Centaurea musarum | Flockenblume Musen | Parnassos Knapweed | Asteraceae |
| Centaurea napifolia | Flockenblume Rübenblättrige | Turnip- leaved Knapweed | Asteraceae |
| Centaurea napulifera | Flockenblume Rübenbildende | Turnip- bearing Knapweed | Asteraceae |
| Centaurea nemoralis | Flockenblume Hain | Common Knapweed | Asteraceae |
| Centaurea nervosa | Flockenblume Federige | Ornamental Knapweed | Asteraceae |
| Centaurea nevadensis | Flockenblume Sierra Nevada | Sierra Nevada Knapweed | Asteraceae |
| Centaurea niederi | Flockenblume Nieders | Nieder's Knapweed | Asteraceae |
| Centaurea nigra | Flockenblume Schwarze | Lesser Knapweed | Asteraceae |
| Centaurea nigrescens | Flockenblume Schwärzliche | Tyrol Knapweed | Asteraceae |
| Centaurea nissana | Flockenblume Nis | Nis Knapweed | Asteraceae |
| Centaurea occasus | Flockenblume Algarve | Algarve Knapweed | Asteraceae |
| Centaurea orbelica | Flockenblume Orbelische | Orbelian Knapweed | Asteraceae |
| Centaurea orientalis | Flockenblume Morgenländische | Oriental Knapweed | Asteraceae |
| Centaurea orphanidea | Flockenblume Orphanides' | Orphanides's Knapweed | Asteraceae |
| Centaurea ornata | Flockenblume Verzierte | Decorated Knapweed | Asteraceae |
| Centaurea ossaea | Flockenblume Mt. Ossa | Mt. Ossa Knapweed | Asteraceae |
| Centaurea pandateria | Flockenblume Ventotene | Ventotene Knapweed | Asteraceae |
| Centaurea pangaea | Flockenblume Mt. Pangeon | Mt. Pangeon Knapweed | Asteraceae |
| Centaurea paniculata | Flockenblume Rispige | Jersey Knapweed | Asteraceae |
| Centaurea panormitana | Flockenblume Palermo |
Palermo Knapweed |
Asteraceae |
| Centaurea parilica | Flockenblume Paril | Paril Knapweed | Asteraceae |
| Centaurea parlatoris | Flockenblume Parlatores | Parlatore's Knapweed | Asteraceae |
| Centaurea paui | Flockenblume Paus | Pau's Knapweed | Asteraceae |
| Centaurea pawlowskii | Flockenblume Pawlowskis | Pawlowski's Knapweed | Asteraceae |
| Centaurea paxorum | Flockenblume Paxos | Paxos Knapweed | Asteraceae |
| Centaurea pectinata | Flockenblume Kamm | Pectinate Knapweed | Asteraceae |
| Centaurea pelia | Flockenblume Pelion | Pelion Knapweed | Asteraceae |
| Centaurea pestalotii | Flockenblume Pestalozzis | Pestalozzi's Knapweed | Asteraceae |
| Centaurea peucedanifolia | Flockenblume Haarstrangblättrige | Peucedanum- leaved Knapweed | Asteraceae |
| Centaurea phalacrica | Flockenblume Messina | Messina Knapweed | Asteraceae |
| Centaurea phrygia | Flockenblume Phrygische | Phrygian Knapweed | Asteraceae |
| Centaurea pichleri | Flockenblume Pichlers | Pichler's Knapweed | Asteraceae |
| Centaurea pinardii | Flockenblume Pinards | Pinard's Knapweed | Asteraceae |
| Centaurea pindicola | Flockenblume Pindos | Pindos Knapweed | Asteraceae |
| Centaurea pinnata | Flockenblume Gefiederte | Pinnate Knapweed | Asteraceae |
| Centaurea poculatoris | Flockenblume Becherers | Becherer's Knapweed | Asteraceae |
| Centaurea podospermifolia | Flockenblume Schwarzwurzelblättrige | Vipergrass- leaved Star Thistle | Asteraceae |
| Centaurea polyacantha | Flockenblume Vielstachelige | Many- spined Star Thistle | Asteraceae |
| Centaurea polyclada | Flockenblume Vielverzweigte | Much- brunched Star Thistle | Asteraceae |
| Centaurea pontica | Flockenblume Pontische | Pontic Knapweed | Asteraceae |
| Centaurea princeps | Flockenblume Klebrige | Sticky Knapweed | Asteraceae |
| Centaurea prolongoi | Flockenblume Verlängerte | Prolonged Knapweed | Asteraceae |
| Centaurea promota | Flockenblume Begünstigte | Promoted Knapweed | Asteraceae |
| Centaurea pseudocadmea | Flockenblume Kadmeaähnliche | Cadmean- like Knapweed | Asteraceae |
| Centaurea pseudocineraria | Flockenblume Falsche Aschen | False Ash Knapweed | Asteraceae |
| Centaurea pseudophrygia | Flockenblume Perücken | Wig Knapweed | Asteraceae |
| Centaurea psilacantha | Flockenblume Nacktdornige | Naked- thorn Star Thistle | Asteraceae |
| Centaurea ptarmicifolia | Flockenblume Schafgarbenblättrige | Yarrow- leaved Knapweed | Asteraceae |
| Centaurea pullata | Flockenblume Bräunliche | Purple Knapweed | Asteraceae |
| Centaurea pulvinata | Flockenblume Kissen | Cushion Knapweed | Asteraceae |
| Centaurea pumilio | Flockenblume Zwerg | Dwarf Knapweed | Asteraceae |
| Centaurea ragusina | Flockenblume Ragusa | Ragusa Knapweed | Asteraceae |
| Centaurea raphanina | Flockenblume Rettichartige | Radish- like Knapweed | Asteraceae |
| Centaurea rechingeri | Flockenblume Rechingers | Rechinger's Knapweed | Asteraceae |
| Centaurea redempta | Flockenblume Rettende | Redeemed Knapweed | Asteraceae |
| Centaurea resupinata | Flockenblume Gedrehte | Inverted Knapweed | Asteraceae |
| Centaurea reuteriana | Flockenblume Reuters | Reuter's Knapweed | Asteraceae |
| Centaurea rhaetica | Flockenblume Graubündner | Rhaetian Knapweed | Asteraceae |
| Centaurea rouyi | Flockenblume Rouys | Rouy's Knapweed | Asteraceae |
| Centaurea rupestris | Flockenblume Felsen | Rock Knapweed | Asteraceae |
| Centaurea rutifolia | Flockenblume Weinrautenblättrige | Rue- laeved Knapweed | Asteraceae |
| Centaurea saccensis | Flockenblume Sciacca | Sciacca Knapweed | Asteraceae |
| Centaurea sagredoi | Flockenblume Sagredos | Sagredo's Knapweed | Asteraceae |
| Centaurea salonitana | Flockenblume Kroatische | Croatian Knapweed | Asteraceae |
| Centaurea samothracica | Flockenblume Samothraki | Samothracian Knapweed | Asteraceae |
| Centaurea saxicola | Flockenblume Felsen | Rock Knapweed | Asteraceae |
| Centaurea saxifraga | Flockenblume Stein | Jabalcon Star Thistle | Asteraceae |
| Centaurea scabiosa | Flockenblume Skabiosen | Greater Knapweed | Asteraceae |
| Centaurea scannensis | Flockenblume Abruzzen | Scanno Knapweed | Asteraceae |
| Centaurea schousboei | Flockenblume Schousboes | Schousboe's Knapweed | Asteraceae |
| Centaurea seguenzae | Flockenblume Seguenzas | Seguenza's Knapweed | Asteraceae |
| Centaurea seridis | Flockenblume Endivien | Endive Star Thistle | Asteraceae |
| Centaurea shumkana | Flockenblume Shumkas | Shumka's Knapweed | Asteraceae |
| Centaurea sicana | Flockenblume Mt. Sicani | Mt. Sicani Knapweed | Asteraceae |
| Centaurea sicula | Flockenblume Nizza | Mediterranean Star Thistle | Asteraceae |
| Centaurea solstitialis | Flockenblume Sonnwend | Yellow Star Thistle | Asteraceae |
| Centaurea solstitialis ssp adamii | Flockenblume Adams | Adams Knapweed | Asteraceae |
| Centaurea soskae | Flockenblume Soskas | Soska's Knapweed | Asteraceae |
| Centaurea sphaerocephala | Flockenblume Kugelköpfige | Round- headed Star Thistle | Asteraceae |
| Centaurea spinosa | Flockenblume Dornige | Prickly- branched Knapweed | Asteraceae |
| Centaurea spruneri | Flockenblume Spruners | Spruner's Star Thistle | Asteraceae |
| Centaurea stenolepis | Flockenblume Schmalschuppige | Narrow- scaled Knapweed | Asteraceae |
| Centaurea stoebe | Flockenblume Rispen | Spotted Knapweed | Asteraceae |
| Centaurea stuessyi | Flockenblume Stuessys | Stuessy's Knapwood | Asteraceae |
| Centaurea subciliaris | Flockenblume Kefalonia | Cephalonia Knapweed | Asteraceae |
| Centaurea subsericans | Flockenblume Seidige | Silky Knapweed | Asteraceae |
| Centaurea subtilis | Flockenblume Gargano | Gargano Knapweed | Asteraceae |
| Centaurea sulphurea | Flockenblume Schwefelgelbe | Sulphur Star Thistle | Asteraceae |
| Centaurea susannae | Flockenblume Susannas | Susanna's Star Thistle | Asteraceae |
| Centaurea tauromenitana | Flockenblume Taormina | Taormina Knapweed | Asteraceae |
| Centaurea tenoreana | Flockenblume Majella | Majella Knapweed | Asteraceae |
| Centaurea tenorei | Flockenblume Tenores | Tenore's Knapweed | Asteraceae |
| Centaurea thasia | Flockenblume Thasos | Thasos Knapweed | Asteraceae |
| Centaurea thessala | Flockenblume Thessalische | Thessalian Knapweed | Asteraceae |
| Centaurea thracica | Flockenblume Thrakische | Thracian Knapweed | Asteraceae |
| Centaurea thuillieri | Flockenblume Thuilliers | Thuillier's Knapweed | Asteraceae |
| Centaurea todaroi | Flockenblume Todaros | Todaro's Knapweed | Asteraceae |
| Centaurea toletana | Flockenblume Toledo | Toledo Star Thistle | Asteraceae |
| Centaurea tommasinii | Flockenblume Tommasinis | Tommasini's Knapweed | Asteraceae |
| Centaurea tomorosii | Flockenblume Mt. Tomoros | Mt. Tomoros Knapweed | Asteraceae |
| Centaurea torreana | Flockenblume Della Torres | Della Torre's Knapweed | Asteraceae |
| Centaurea triamularia | Flockenblume Flügelköpfige | Wing- headed Knapwood | Asteraceae |
| Centaurea triniifolia | Flockenblume Faserschirmblättrige | Honewort- leaved Knapweed | Asteraceae |
| Centaurea tripontina | Flockenblume Tresponts | Tresponts Knapwood | Asteraceae |
| Centaurea triumfettii | Blauflockenblume Filz | Trionfetti's Knapwood | Asteraceae |
| Centaurea tuberosa | Blauflockenblume Knollige | Tuberous Knapweed | Asteraceae |
| Centaurea tuntasiana | Flockenblume Tountas' | Tountas's Knapweed | Asteraceae |
| Centaurea tymphaea | Flockenblume Tymfi | Tymphi Knapweed | Asteraceae |
| Centaurea ultraeia | Flockenblume Ultreia | Ultreia Star Thistle | Asteraceae |
| Centaurea umbrosa | Flockenblume Schattenliebende | Shadow Knapweed | Asteraceae |
| Centaurea uniflora | Flockenblume Einköpfige | Singleflower Knapweed | Asteraceae |
| Centaurea urvillei | Flockenblume d'Urvilles | d'Urville's Star Thistle | Asteraceae |
| Centaurea valesiaca | Flockenblume Walliser | Valaisian Knapweed | Asteraceae |
| Centaurea vandasii | Flockenblume Vandas' | Vandas's Knapweed | Asteraceae |
| Centaurea veneris | Flockenblume Porto Venere | Porto Venere Knapweed | Asteraceae |
| Centaurea vermia | Flockenblume Mt. Vermio | Mt. Vermio Knapweed | Asteraceae |
| Centaurea vichrenensis | Flockenblume Mt. Vihren | Mt. Vihren Knapweed | Asteraceae |
| Centaurea virescens | Flockenblume Grünliche | Greenish Knapweed | Asteraceae |
| Centaurea vlachorum | Flockenblume Wallachen | Wallachian Knapweed | Asteraceae |
| Centaurea velenovskyi | Blauflockenblume Velenovskys | Velenovsky's Knapweed | Asteraceae |
| Centaurea vorasana | Blauflockenblume Mt. Voras | Mt. Voras Knapweed | Asteraceae |
| Centaurea wettsteinii | Flockenblume Wettsteins | Wettstein's Knapweed | Asteraceae |
| Centaurea zuccariniana | Flockenblume Zuccarinis | Zuccarini's Knapweed | Asteraceae |
| Centaurea xylobasis | Flockenblume Verholzte | Woody- based Knapweed | Asteraceae |
| Centaurea x loscosii | Flockenblume Loscos' | Loscos's Knapweed | Asteraceae |
| Centaurea x preismannii | Flockenblume Kammschuppige | Preissmann's Knapweed | Asteraceae |
| Centaurea x psammogena | Flockenblume Sandbürtige | Hybrid Knapweed | Asteraceae |
| Centaurium bianoris | Tausendgüldenkraut Zweifarbiges | Two- coloured Centaury | Gentianaceae |
| Centaurium chloodes | Tausendgüldenkraut Buschiges | Grass- green Centaury | Gentianaceae |
| Centaurium erythrea | Tausendgüldenkraut Echtes | Common Centaury | Gentianaceae |
| Centaurium grandiflorum | Tausendgüldenkraut Großblütiges | Large- flowered Centaury | Gentianaceae |
| Centaurium littorale | Tausendgüldenkraut Strand | Seaside Centaury | Gentianaceae |
| Centaurium maritimum | Tausendgüldenkraut Gelbes | Yellow Centaury | Gentianaceae |
| Centaurium pulchellum | Tausendgüldenkraut Zierliches | Branched Centaury | Gentianaceae |
| Centaurium quadrifolium | Tausendgüldenkraut Vierblättriges | Four- leaved Centaury | Gentianaceae |
| Centaurium scilloides | Tausendgüldenkraut Staudiges | Perennial Centaury | Gentianaceae |
| Centaurium somedanum | Tausendgüldenkraut Somiedo | Somiedo Centaury | Gentianaceae |
| Centaurium suffruticosum | Tausendgüldenkraut Strauchiges | Shrubby Centaury | Gentianaceae |
| Centaurium tenuiflorum | Tausendgüldenkraut Schlankes | Slender Centaury | Gentianaceae |
| Centranthus amazonum | Spornblume Sardische | - | Valerianaceae |
| Centranthus angustifolius | Spornblume Schmalblättrige | Narrow- leaved Valerian | Valerianaceae |
| Centranthus calcitrapae | Spornblume Fußangel | Annual Valerian | Valerianaceae |
| Centranthus lecoquii | Spornblume Lecoqs | Lecoq's Valerian | Valerianaceae |
| Centranthus longiflorus | Spornblume Langblütige | Long- flowered Valerian | Valerianaceae |
| Centranthus macrosiphon | Spornblume Großröhrige | Spanish Valerian | Valerianaceae |
| Centranthus nevadensis | Spornblume Sierra Nevada | Sierra Nevada Valerian | Valerianaceae |
| Centranthus ruber | Spornblume Rote | Red Valerian | Valerianaceae |
| Centranthus sieberi | Spornblume Siebers | Sieber's Valerian | Valerianaceae |
| Centranthus trinervis | Spornblume Dreinervige | - | Valerianaceae |
| Cephalantheria cucullata | Waldvögelein Kreta | Hooded Helleborine | Orchidaceae |
| Cephalantheria damasonium | Waldvögelein Weißes | Large White Helleborine | Orchidaceae |
| Cephalantheria epipactoides | Waldvögelein Gesporntes | Eastern Hooded Helleborine | Orchidaceae |
| Cephalantheria longifolia | Waldvögelein Schwertblättriges | Sword- leaved Helleborine | Orchidaceae |
| Cephalantheria rubra | Waldvögelein Rotes | Red Helleborine | Orchidaceae |
| Cephalaria alpina | Schuppenkopf Alpen | Alpine Cephalaria | Dipsacaceae |
| Cephalaria ambrosioides | Schuppenkopf Ambrosiaähnlicher | Ambrosia- like Cephalaria | Dipsacaceae |
| Cephalaria balearica | Schuppenkopf Balearen | Balearic Cephalaria | Dipsacaceae |
| Cephalaria bigazii | Schuppenkopf Bigazzis | Bigazzi's Cephalaria | Dipsacaceae |
| Cephalaria boetica | Schuppenkopf Baetischer | Baetian Cephalaria | Dipsacaceae |
| Cephalaria ebusitana | Schuppenkopf Ibiza | Ibiza Cephalaria | Dipsacaceae |
| Cephalaria fanourii | Schuppenkopf Phanourios | Phanourios' Cephalaria | Dipsacaceae |
| Cephalaria flava | Schuppenkopf Gelber | Yellow Cephalaria | Dipsacaceae |
| Cephalaria gigantea | Schuppenkopf Riesen | Giant Cephalaria | Dipsacaceae |
| Cephalaria glaberrima | Schuppenkopf Glatter | Smooth Cephalaria | Dipsacaceae |
| Cephalaria joppensis | Schuppenkopf Jaffa | Jaffa Cephalaria | Dipsacaceae |
| Cephalaria leucantha | Schuppenkopf Weißer | White Cephalaria | Dipsacaceae |
| Cephalaria linearifolia | Schuppenkopf Linealblättriger | Linear- leaved Cephalaria | Dipsacaceae |
| Cephalaria mediterranea | Schuppenkopf Mittelmeer | Mediterranean Cephalaria | Dipsacaceae |
| Cephalaria squamiflora | Schuppenkopf Schuppenblütiger | Scale- flowered Cephalaria | Dipsacaceae |
| Cephalaria tenuiloba | Schuppenkopf Schmallappiger | Narrow- lobed Cephalaria | Dipsacaceae |
| Cephalaria transsylvanica | Transsylvanischer Schuppenkopf | Transsilvanian Cephalaria | Dipsacaceae |
| Cerastium candidissimum | Hornkraut Reinweißes | Greek Summer in Snow | Caryophyllaceae |
| Cerastium diffusum | Hornkraut Viermänniges | Fourstamen Chickweed | Caryophyllaceae |
| Cerastium siculum | Hornkraut Sizilianisches | Sicilian Chickweed | Caryophyllaceae |
| Cerastium subtetrandrum | Hornkraut Vierzähliges | Tetramerous Chickweed | Caryophyllaceae |
| Cerastium tomentosum | Hornkraut Filziges | Summer in Snow | Caryophyllaceae |
| Ceratocephala falcata | Hornköpfchen Sichelfrüchtiges | Sword- fruited Buttercup | Ranunculaceae |
| Ceratocephala orthoceras | Hornköpfchen Geradfrüchtiges | Curve- seed Buttercup | Ranunculaceae |
| Ceratophyllum demersum | Hornblatt Raues | Rigid Hornwort | Ceratophyllaceae |
| Ceratophyllum submersum | Hornblatt Zartes | Soft Hornwort | Ceratophyllaceae |
| Ceratopteris thalictroides | Hornfarn Feinblättriger | Water Hornfern | Pteridaceae |
| Ceratonia siliqua | Johannisbrotbaum Gewöhnlicher | St. Johns Bread | Caesalpiniaceae |
| Ceratostigma plumbaginoides | Hornnarbe Kriechende | Blue Leadwood | Plumbaginaceae |
| Cercis siliquastrum | Judasbaum Gewöhnlicher | Judas Tree | Caesalpiniaceae |
| Cerinthe alpina | Wachsblume Alpen | Smooth Honeywort | Boraginaceae |
| Cerinthe gymnandra | Wachsblume Nacktmännige | Naked stamen Honeywort | Boraginaceae |
| Cerinthe major | Wachsblume Große | Large Honeywort | Boraginaceae |
| Cerinthe minor | Wachsblume Kleine | Lesser Honeywort | Boraginaceae |
| Cerinthe retorta | Wachsblume Griechische | Violet Honeywort | Boraginaceae |
| Cerinthe tenuiflora | Wachsblume Zartblütige | Small- flowered Honeywort | Boraginaceae |
| Cervaria aegopodioides | Hirschwurz Gierschähnliche | Aegopodium- like Spignel | Apiaceae |
| Cervaria rivini | Hirschwurz Echte | Broad- leaved Spignel | Apiaceae |
| Cestrum parqui | Hammerstrauch Chilenischer | Chilean Jessamine | Solanaceae |
| Chaenomeles japonica | Scheinquitte Japanische | Japanese Quince | Rosaceae |
| Chaenomeles speciosa | Scheinquitte Chinesische | Chinese Quince | Rosaceae |
| Chaenomeles x superba | Scheinquitte Prächtige | Superb Quince | Rosaceae |
| Chaenorhinum crassifolium | Orant Dickblättriger | Thick- leaved Toadflax | Plantaginaceae |
| Chaenorhinum exile | Orant Felsen | Rock Toadflax | Plantaginaceae |
| Chaenorhinum formenterae | Orant Formentera | Formentera Toadflax | Plantaginaceae |
| Chaenorhinum gamezii | Orant Gamez' | Gamez's Toadflax | Plantaginaceae |
| Chaenorhinum glareosum | Orant Kies | Gravel Toadflax | Plantaginaceae |
| Chaenorhinum grandiflorum | Orant Großblütiger | Large- flowered Toadflax | Plantaginaceae |
| Chaenorhinum idaeum | Orant Ida | Ida Toadflax | Plantaginaceae |
| Chaenorhinum litorale | Orant Küsten | Coastal Toadflax | Plantaginaceae |
| Chaenorhinum macropodum | Orant Langstängeliger | Long- stalked Toadflax | Plantaginaceae |
| Chaenorhinum minus | Orant Kleiner | Small Toadflax | Plantaginaceae |
| Chaenorhinum origanifolium | Orant Dostblätteriger | Malling Toadflax | Plantaginaceae |
| Chaenorhinum origanifolium ssp. cotiellae | Orant Cotiella | Cotiella Toadflax | Plantaginaceae |
| Chaenorhinum raveyi | Orant Raveys | Ravey's Toadflax | Plantaginaceae |
| Chaenorhinum reyesii | Orant Reyes' | Reyes's Toadflax | Plantaginaceae |
| Chaenorhinum robustum | Orant Robuster | Robust Toadflax | Plantaginaceae |
| Chaenorhinum rubrifolium | Orant Rotblättriger | Red- leaved Toadflax | Plantaginaceae |
| Chaenorhinum rupestre | Orant Felsen | Rock Toadflax | Plantaginaceae |
| Chaenorhinum segoviense | Orant Segovia | Segovia Toadflax | Plantaginaceae |
| Chaenorhinum serpentinum | Orant Serpentin | Serpentine Toadflax | Plantaginaceae |
| Chaenorhinum serpyllifolium | Orant Thymianblättriger | Thyme- leaved Toadflax | Plantaginaceae |
| Chaenorhinum tenellum | Orant Zarter | Tender Toadflax | Plantaginaceae |
| Chaenorhinum villosum ssp. granatense | Orant Granada | Granada Toadflax | Plantaginaceae |
| Chaenorhinum villosum ssp. villosum | Orant Zottiger | Hairy Toadflax | Plantaginaceae |
| Chaerophyllum aromaticum | Kälberkropf Aromatischer | Broadleaf Chervil | Apiaceae |
| Chaerophyllum aureum | Kälberkropf Gold | Golden Chervil | Apiaceae |
| Chaerophyllum bulbosum | Kälberkropf Knolliger | Turip- rooted Chervil | Apiaceae |
| Chaerophyllum coloratum | Kälberkropf Gefärbter | Coloured Chervil | Apiaceae |
| Chaerophyllum creticum | Kälberkropf Kretischer | Cretan Chervil | Apiaceae |
| Chaerophyllum elegans | Kälberkropf Zierlicher | Elegant Chervil | Apiaceae |
| Chaerophyllum heldreichii | Kälberkropf Heldreichs | Heldreich's Chervil | Apiaceae |
| Chaerophyllum hirsutum | Kälberkropf Behaarter | Hairy Chervil | Apiaceae |
| Chaerophyllum temulum | Kälberkropf Taumel | Rough Chervil | Apiaceae |
| Chaerophyllum villarsii | Kälberkropf Villars' | Villars's Chervil | Apiaceae |
| Chaetonychia cymosa | Ährenmiere Trugdoldige | Cymose Nailwort | Caryophyllaceae |
| Chamaecytisus albus | Zwergginster Weißer | White Broom | Fabaceae |
| Chamaecytisus austriacus | Geißklee Österreichischer | Austrian Broom | Fabaceae |
| Chamaecytisus elongatus | Geißklee Verlängerter | Elongated Broom | Fabaceae |
| Chamaecytisus eriocarpus | Geißklee Wollfrüchtiger | Wool- fruited Broom | Fabaceae |
| Chamaecytisus hirsutus | Geißklee Rauhaariger | Hairy Broom | Fabaceae |
| Chamaecytisus lotoides | Geißklee Französischer | Lotus- like Broom | Fabaceae |
| Chamaecytidus polytrichus | Geißklee Vielhaariger | Hispid Broom | Fabaceae |
| Chamaecytisus purpureus | Zwergginster Purpur | Purple Broom | Fabaceae |
| Chamaecytisus ratisbonensis | Geißklee Regensburger | Regensburgian Broom | Fabaceae |
| Chamaecytisus supinus | Geißklee Kopf | Clustered Broom | Fabaceae |
| Chamaecytisus triflorus | Geißklee Rauhaariger | Hairy Broom | Fabaceae |
| Chamaedaphne calyculata | Torfgränke | Letherleaf | Ericaceae |
| Chamaemelum fuscatum | Spornkamille Dunkelbraune | Brown Chamomille | Asteraceae |
| Chamaemelum nobile | Spornkamille Edle | Roman Chamomille | Asteraceae |
| Chamaerops humilis | Zwergpalme | European Fan Palm | Arecaceae |
| Chamaespartium delphinense | Ginster Dauphine | Dauphine Broom | Fabaceae |
| Chamaespartium sagittalis | Ginster Flügel | Winged Broom | Fabaceae |
| Chamaespartium undulatum | Ginster Gewelltblättriger | Undulate Broom | Fabaceae |
| Chamaesyce canescens ssp. canescens | Zwergwolfsmilch Graue | Grey prostrate Spurge | Euphorbiaceae |
| Chamaesyce canescens ssp. massiliensis | Zwergwolfsmilch Marseiller | Marseille Spurge | Euphorbiaceae |
| Chamaesyce humifusa | Zwergwolfsmilch Niederliegende | Trailing Spurge | Euphorbiaceae |
| Chamaesyce humistrata | Zwergwolfsmilch Ausgebreitete | Spreading Sandmat | Euphorbiaceae |
| Chamaesyce hypericifolia | Zwergwolfsmilch Johanniskrautblättrige | Graceful Spurge | Euphorbiaceae |
| Chamaesyce maculata | Zwergwolfsmilch Gefleckte | Spotted Sandmat | Euphorbiaceae |
| Chamaesyce nutans | Zwergwolfsmilch Nickende | Eyebane | Euphorbiaceae |
| Chamaesyce peplis | Zwergwolfsmilch Sumpfquendel | Purple Spurge | Euphorbiaceae |
| Chamaesyce polygonifolia | Zwergwolfsmilch Vieleckblättrige | Seaside Sandmat | Euphorbiaceae |
| Chamaesyce prostrata | Zwergwolfsmilch Hingestreckte | Prostrate Sandmat | Euphorbiaceae |
| Chamaesyce serpens | Zwergwolfsmilch Geschlängelte | Creeping Spurge | Euphorbiaceae |
| Chamaesyce canescens | Zwergwolfsmilch Graue | Grey prostrate Spurge | Euphorbiaceae |
| Chamorchis alpina | Zwergorchis | False Musk Orchid | Orchidaceae |
| Cheilanthes acrostica | Lippenfarn Mauer | Scented Lip Fern | Pteridaceae |
| Cheilanthes guanchica | Lippenfarn Guanchen | Canarian Lip Fern | Pteridaceae |
| Cheilanthes hispanica | Lippenfarn Spanischer | Spanish Lip Fern | Pteridaceae |
| Cheilanthes maderensis | Lippenfarn Madeira | Madeira Lip Fern | Pteridaceae |
| Cheilanthes persica | Lippenfarn Persischer | Persian Lip Fern | Pteridaceae |
| Cheilanthes tinaei | Lippenfarn Tineos | Tineo's Lip Fern | Pteridaceae |
| Chelidonium majus | Schöllkraut | Celandine | Papaveraceae |
| Chenopodium album | Gänsefuß Weißer | White Goosefoot | Chenopodiaceae |
| Chenopodium berlandieri | Gänsefuß Berlandiers | Pitseed Goosefoot | Chenopodiaceae |
| Chenopodium ficifolium | Gänsefuß Feigenblättriger | Fig- leaved Goosefoot | Chenopodiaceae |
| Chenopodium hircinum | Gänsefuß Bocks | Foetid Goosefoot | Chenopodiaceae |
| Chenopodium giganteum | Gänsefuß Riesen | Giant Goosefoot | Chenopodiaceae |
| Chenopodium hircinum | Gänsefuß Bocks | Foetid Goosefoot | Chenopodiaceae |
| Chenopodium opulifolium | Gänsefuß Schneeballblättriger | Seaport Goosefoot | Chenopodiaceae |
| Chenopodium pedunculare | Gänsefuß Stielblütiger | Late- flowering Goosefoot | Chenopodiaceae |
| Chenopodium pratericola | Gänsefuß Schmalblättriger | Narrow- leaved Goosefoot | Chenopodiaceae |
| Chenopodium probstii | Gänsefuß Probsts | Probst's Goosefoot | Chenopodiaceae |
| Chenopodium quinoa | Gänsefuß Reis | Quinoa | Chenopodiaceae |
| Chenopodium striatiforme | Gänsefuß Kleinblättriger | Small- leaved Goosefoot | Chenopodiaceae |
| Chenopodium strictum | Gänsefuß Gestreifter | Late- flowering Goosefoot | Chenopodiaceae |
| Chenopodium suecicum | Gänsefuß Schwedischer | Swedish Goosefoot | Chenopodiaceae |
| Chenopodium vulvaria | Gänsefuß Stinkender | Stinking Goosefoot | Chenopodiaceae |
| Chenopodiastrum hybridum | Gänsefuß Stechapfelblättriger | Maple- leaved Goosefoot | Chenopodiaceae |
| Chenopodiastrum murale | Gänsefuß Mauer | Nettle- leaved Goosefoot | Chenopodiaceae |
| Chimaphila maculata | Winterlieb Geflecktes | Spotted Wintergreen | Ericaceae |
| Chimaphila umbellata | Winterlieb Doldiges | Umbellate Wintergreen | Ericaceae |
| Chionodoxa albescens | Sternhyazinthe Weißliche | Whitish Glory-of-the-snow | Hyacinthaceae |
| Chionodoxa forbesii | Sternhyazinthe Forbes' | Forbes's Glory-of-the-snow | Hyacinthaceae |
| Chionodoxa luciliae | Sternhyazinthe Gewöhnliche | Lucile's Glory-of-the-snow | Hyacinthaceae |
| Chionodoxa nana | Sternhyazinthe Zwerg | Dwarf Glory-of-the-snow | Hyacinthaceae |
| Chionodoxa sardensis | Sternhyazinthe Dunkle | Turkish Glory-of-the-snow | Hyacinthaceae |
| Chondrilla chondrilloides | Knorpellattich Alpen | Alpine Skeletonweed | Asteraceae |
| Chondrilla juncea | Knorpellattich Großer | Rush Skeletonweed | Asteraceae |
| Chondrilla ramosissima | Knorpellattich Vielästiger | Many- branched Skeletonweed | Asteraceae |
| Chondrilla urumoffii | Knorpellattich Urumovs | Urumov's Skeletonweed | Asteraceae |
| Christella dentata | Sumpffarn Gezähnter | Downy Maiden Fern | Thelypteridaceae |
| Chrozophora obliqua | Lackmuskraut Behaartes | Whitish Turnsole | Euphorbiaceae |
| Chrozophora tinctoria | Lackmuskraut Gewöhnliches | Dyer's Turnsole | Euphorbiaceae |
| Chrysanthemum x hortorum | Chrysantheme Garten | Florists Chrysanthemum | Asteraceae |
| Cicendia filiformis | Fadenenzian Heide | Slender Cicendia | Gentianaceae |
| Cicerbita alpina | Milchlattich Alpen | Alpine Thow- Thistle | Asteraceae |
| Cicerbita macrophylla | Milchlattich Großblättrige | Common Thow- Thistle | Asteraceae |
| Cicerbita pancicii | Milchlattich Pancics | Pancic's Thow- Thistle | Asteraceae |
| Cicerbita plumieri | Milchlattich Französischer | Hailess Thow- Thistle | Asteraceae |
| Cichorium calvum | Wegwarte Kahlfrüchtige | Bare- fruited Chicory | Asteraceae |
| Cichorium endivia | Endivie | Endive | Asteraceae |
| Cichorium intybus | Wegwarte Gewöhnliche | Common Chicory | Asteraceae |
| Cichorium pumilum | Wegwarte Kleine | Dwarf Chicory | Asteraceae |
| Cichorium spinosum | Wegwarte Dornige | Spiny Chicory | Asteraceae |
| Cionura erecta | Hundswürger Aufrechter | Erect Mikweed | Apocynaceae |
| Circaea alpina | Hexenkraut Alpen | Small Enchanter's Nightshade | Onagraceae |
| Circaea lutetiana | Hexenkraut Gewöhnliches | Big Enchanter's Nightshade | Onagraceae |
| Circaea x intermedia | Hexenkraut Mittleres | Upland Enchanter's Nightshade | Onagraceae |
| Cistanche pelyphaea | Cistanche Gelbe | Yellow Cistanche | Orobanchaceae |
| Cistanche violacea | Cistanche Violette | Violet Cistanche | Orobanchaceae |
| Cistus albidus | Zistrose Weißliche | White- leaved Rockrose | Cistaceae |
| Cistus clusii | Zistrose Clusius | Clusius' Rockrose | Cistaceae |
| Cistus creticus | Zistrose Kretische | Grey Rockrose | Cistaceae |
| Cistus crispus | Zistrose Krause | Curled Rockrose | Cistaceae |
| Cistus heterophyllus | Zistrose Verschiedenblättrige | Varied- leaved Rockrose | Cistaceae |
| Cistus inflatus | Zistrose Aufgeblasene | Inflated Rockrose | Cistaceae |
| Cistus ladanifer | Zistrose Lack | Crimson Spot Rockrose | Cistaceae |
| Cistus laurifolius | Zistrose Lorbeerblättrige | Laurel- leaved Rockrose | Cistaceae |
| Cistus libanotis | Zistrose Rosmarinblättrige | Rosemary- leaved Rockrose | Cistaceae |
| Cistus monspeliensis | Zistrose Montpellier | Montpellier Rockrose | Cistaceae |
| Cistus parviflorus | Zistrose Kleinblütige | Small- flowered Rockrose | Cistaceae |
| Cistus populifolius | Zistrose Pappelblättrige | Poplar- leaved Rockrose | Cistaceae |
| Cistus pouzolzii | Zistrose Pouzolz | Pouzolz Rockrose | Cistaceae |
| Cistus salviifolius | Zistrose Salbeiblättrige | Sage- leaved Rockrose | Cistaceae |
| Cistus sintenisii | Zistrose Sintenis | Sintenis' Rockrose | Cistaceae |
| Citrullus colocynthis | Koloquinte | Colocynth | Cucurbitaceae |
| Citrullus lanatus | Wassermelone | Watermelon | Cucurbitaceae |
| Citrus aurantiifolia | Limette Echte | Lime | Rutaceae |
| Citrus maxima | Pampelmuse | Pamplemousse | Rutaceae |
| Citrus media | Zitrone Zitronat | Citron | Rutaceae |
| Citrus reticulata | Mandarine | Mandarin Orange | Rutaceae |
| Citrus x aurantium | Bitterorange | Bitter Orange | Rutaceae |
| Citrus x clementina | Klementine | Clementine | Rutaceae |
| Citrus x limon | Zitrone | Lemon | Rutaceae |
| Citrus x paradisi | Grapefruit | Pamplemousse | Rutaceae |
| Citrus x sinensis | Orange | Sweet Orange | Rutaceae |
| Cladanthus arabicus | Spornkamille Arabische | Arabian Dogfennel | Asteraceae |
| Cladanthus mixtus | Spornkamille Gemischte | Weedy Dogfennel | Asteraceae |
| Clematis alpina | Waldrebe Alpen | Alpine Clematis | Ranunculaceae |
| Clematis campaniflora | Waldrebe Glockenblütige | Bell- flowered Clematis | Ranunculaceae |
| Clematis cirrhosa | Waldrebe Rankende | Yellowish Clematis | Ranunculaceae |
| Clematis elisabethae- carolae | Waldrebe Liselottes | Liselotte's Clematis | Ranunculaceae |
| Clematis flammula | Waldrebe Brennende | Fragrant Clematis | Ranunculaceae |
| Clematis integrifolia | Waldrebe Ganzblättrige | Simple- leaved Clematis | Ranunculaceae |
| Clematis orientalis | Waldrebe Orientalische | Orange Peel Clematis | Ranunculaceae |
| Clematis recta | Waldrebe Aufrechte | Ground Clematis | Ranunculaceae |
| Clematis tangutica | Waldrebe Mongolische | Golden Clematis | Ranunculaceae |
| Clematis vitalba | Waldrebe Gewöhnliche | Evergreen Clematis | Ranunculaceae |
| Clematis viticella | Waldrebe Italienische | Italian Clematis | Ranunculaceae |
| Cleome iberica | Spinnenpflanze Kaukasische | Caucasian Spiderflower | Cleomaceae |
| Cleome ornithopodioides | Spinnenpflanze Vogelfußähnliche | Bird Spiderflower | Cleomaceae |
| Cleome violacea | Spinnenpflanze Violette | Violet Spiderflower | Cleomaceae |
| Clerodendrum trichotomum | Losbaum Japanischer | Harlequin Glorybower | Lamiaceae |
| Cleonia lusitanica | Cleonie Portugiesische | Portuguese Cleonia | Lamiaceae |
| Clinopodium acinos | Steinquendel Gewöhnlicher | Basil Calamint | Lamiaceae |
| Clinopodium alpinum | Steinquendel Alpen | Alpine Calamint | Lamiaceae |
| Clinopodium corsicum | Steinquendel Korsischer | Corsican Calamint | Lamiaceae |
| Clinopodium creticum | Bergminze Kretische | Cretan Calamint | Lamiaceae |
| Clinopodium dalmaticum | Bergminze Dalmatische | Dalmatian Calamint | Lamiaceae |
| Clinopodium einseleanum | Bergminze Österreichische | Einsele's Calamint | Lamiaceae |
| Clinopodium grandiflorum | Bergminze Großblütige | Greater Calamint | Lamiaceae |
| Clinopodium graveolens | Steinquendel Rundblättriger | Round- leaved Calamint | Lamiaceae |
| Clinopodium insulare | Bergminze Graue | Grey Calamint | Lamiaceae |
| Clinopodium menthifolium | Bergminze Wald | Wood Calamint | Lamiaceae |
| Clinopodium nanum | Steinquendel Winziger | Dwarf Calamint | Lamiaceae |
| Clinopodium nepeta | Bergminze Kleinblütige | Lesser Calamint | Lamiaceae |
| Clinopodium serpyllifolium | Bergminze Thymianblättrige | Thyme- leaved Calamint | Lamiaceae |
| Clinopodium suaveolens | Steinquendel Wohlriechender | Fragrant Calamint | Lamiaceae |
| Clinopodium taygeteum | Bergminze Taygetos | Taygetos Calamint | Lamiaceae |
| Clinopodium thymifolium | Bergminze Slowenische | Slovanian Calamint | Lamiaceae |
| Clinopodium vulgare | Wirbeldost Gewöhnlicher | Wild Basil | Lamiaceae |
| Cneorum tricoccon | Zeiland Dreibeeriger | Olive Spurge | Rutaceae |