| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CYCI2 | Cymopterus cinerarius Gray | gray springparsley | Apiaceae
|
| CYCO4 | Cymopterus corrugatus M.E. Jones | wrinklewing springparsley | Apiaceae
|
| CYCO5 | Cymopterus coulteri (M.E. Jones) Mathias | twoleaf springparsley | Apiaceae
|
| CYDA3 | Cymopterus davisii Hartman | Davis' springparsley | Apiaceae
|
| CYDE | Cymopterus deserticola Brandeg. | desert springparsley | Apiaceae
|
| CYDO2 | Cymopterus douglassii Hartman & Constance | Douglass' springparsley | Apiaceae
|
| CYDU | Cymopterus duchesnensis M.E. Jones | Uinta Basin springparsley | Apiaceae
|
| CYEV | Cymopterus evertii Hartman & Kirkpatrick | Evert's springparsley | Apiaceae
|
| CYFE | Cymopterus fendleri Gray | Cymopterus acaulis var. fendleri | Apiaceae
|
| CYGI | Cymopterus gilmanii Morton | Gilman's springparsley | Apiaceae
|
| CYGL | Cymopterus glaucus Nutt. | waxy springparsley | Apiaceae
|
| CYGL2 | Cymopterus globosus (S. Wats.) S. Wats. | globe springparsley | Apiaceae
|
| CYGO | Cymopterus goodrichii Welsh & Neese | Toiyabe springparsley | Apiaceae
|
| CYHE3 | Cymopterus hendersonii (Coult. & Rose) Cronq. | Pteryxia hendersonii | Apiaceae
|
| CYHI2 | Cymopterus higginsii Welsh | Cymopterus acaulis var. higginsii | Apiaceae
|
| CYHU4 | Cymopterus humboldtensis M.E. Jones | Cymopterus nivalis | Apiaceae
|
| CYIB | Cymopterus ibapensis M.E. Jones | Ibapah springparsley | Apiaceae
|
| CYJO | Cymopterus jonesii Coult. & Rose | Jones' springparsley | Apiaceae
|
| CYLA10 | Cymopterus lapidosus (M.E. Jones) M.E. Jones | talus springparsley | Apiaceae
|
| CYLE6 | Cymopterus lemmonii (Coult. & Rose) Dorn | Pseudocymopterus montanus | Apiaceae
|
| CYLI14 | Cymopterus littoralis auct. non Gray | Glehnia littoralis ssp. leiocarpa | Apiaceae
|
| CYLO10 | Cymopterus longilobus (Rydb.) W.A. Weber | Pteryxia hendersonii | Apiaceae
|
| CYLOI | Cymopterus longipes S. Wats. var. ibapensis (M.E. Jones) Cronq. | Cymopterus ibapensis | Apiaceae
|
| CYLO | Cymopterus longipes S. Wats. | longstalk springparsley | Apiaceae
|
| CYMA25 | Cymopterus macdougalii (Coult. & Rose) Tidestrom | Aletes macdougalii ssp. macdougalii | Apiaceae
|
| CYMA | Cymopterus macrorhizus Buckl. | bigroot springparsley | Apiaceae
|
| CYME | Cymopterus megacephalus M.E. Jones | largeleaf springparsley | Apiaceae
|
| CYMI2 | Cymopterus minimus (Mathias) Mathias | Cedar Breaks springparsley | Apiaceae
|
| CYMO | Cymopterus montanus Nutt. ex Torr. & Gray | mountain springparsley | Apiaceae
|
| CYMU2 | Cymopterus multinervatus (Coult. & Rose) Tidestrom | purplenerve springparsley | Apiaceae
|
| CYNE | Cymopterus newberryi (S. Wats.) M.E. Jones | sweetroot springparsley | Apiaceae
|
| CYNI3 | Cymopterus nivalis S. Wats. | snowline springparsley | Apiaceae
|
| CYPAA | Cymopterus panamintensis Coult. & Rose var. acutifolius (Coult. & Rose) Munz | Panamint springparsley | Apiaceae
|
| CYPAP | Cymopterus panamintensis Coult. & Rose var. panamintensis | Panamint springparsley | Apiaceae
|
| CYPA | Cymopterus panamintensis Coult. & Rose | Panamint springparsley | Apiaceae
|
| CYPE9 | Cymopterus petraeus M.E. Jones | Pteryxia petraea | Apiaceae
|
| CYPL | Cymopterus planosus (Osterhout) Mathias | Rocky Mountain springparsley | Apiaceae
|
| CYPU | Cymopterus purpurascens (Gray) M.E. Jones | widewing springparsley | Apiaceae
|
| CYPUJ | Cymopterus purpureus S. Wats. var. jonesii (Coult. & Rose) Goodrich | Cymopterus jonesii | Apiaceae
|
| CYPUR | Cymopterus purpureus S. Wats. var. rosei (M.E. Jones ex Coult. & Rose) Goodrich | Cymopterus rosei | Apiaceae
|
| CYPU2 | Cymopterus purpureus S. Wats. | purple springparsley | Apiaceae
|
| CYRIS | Cymopterus ripleyi Barneby var. saniculoides Barneby | Cymopterus ripleyi | Apiaceae
|
| CYRI2 | Cymopterus ripleyi Barneby | Ripley's springparsley | Apiaceae
|
| CYRO3 | Cymopterus rosei (M.E. Jones ex Coult. & Rose) M.E. Jones | Rose's springparsley | Apiaceae
|
| CYTEA | Cymopterus terebinthinus (Hook.) Torr. & Gray var. albiflorus (Torr. & Gray) M.E. Jones | Pteryxia terebinthina var. albiflora | Apiaceae
|
| CYTEC | Cymopterus terebinthinus (Hook.) Torr. & Gray var. calcareus (M.E. Jones) Cronq. | Pteryxia terebinthina var. albiflora | Apiaceae
|
| CYTEC2 | Cymopterus terebinthinus (Hook.) Torr. & Gray var. californicus (Coult. & Rose) Jepson | Pteryxia terebinthina var. californica | Apiaceae
|
| CYTEF | Cymopterus terebinthinus (Hook.) Torr. & Gray var. foeniculaceus (Nutt. ex Torr. & Gray) Cronq. | Pteryxia terebinthina var. foeniculacea | Apiaceae
|
| CYTEP | Cymopterus terebinthinus (Hook.) Torr. & Gray var. petraeus (M.E. Jones) Goodrich | Pteryxia petraea | Apiaceae
|
| CYTE9 | Cymopterus terebinthinus (Hook.) Torr. & Gray | Pteryxia terebinthina var. terebinthina | Apiaceae
|
| CYTR13 | Cymopterus trotteri (Welsh & Goodrich) Cronq. | Oreoxis trotteri | Apiaceae
|
| CYWA11 | Cymopterus watsonii (Coult. & Rose) M.E. Jones | Cymopterus ibapensis | Apiaceae
|
| CYWI3 | Cymopterus williamsii Hartman & Constance | Williams' springparsley | Apiaceae
|
| CYMOP2 | Cymopterus Raf. | springparsley | Apiaceae
|
| CYAN4 | Cynanchum anegadense (Britt.) Alain | Caribbean swallow-wort | Asclepiadaceae
|
| CYAN5 | Cynanchum angustifolium Pers. | gulf coast swallow-wort | Asclepiadaceae
|
| CYAR12 | Cynanchum arizonicum (Gray) Shinners | Arizona swallow-wort | Asclepiadaceae
|
| CYBAB | Cynanchum barbigerum (Scheele) Shinners var. breviflorum Shinners | Cynanchum pringlei | Asclepiadaceae
|
| CYBA | Cynanchum barbigerum (Scheele) Shinners | bearded swallow-wort | Asclepiadaceae
|
| CYBL | Cynanchum blodgettii (Gray) Shinners | Blodgett's swallow-wort | Asclepiadaceae
|
| CYCH | Cynanchum cheesmanii Woods. | Cheesman's swallow-wort | Asclepiadaceae
|
| CYCU3 | Cynanchum cubense (A. Rich.) Woods. | Cuban swallow-wort | Asclepiadaceae
|
| CYEP | Cynanchum ephedroides (Griseb.) Alain | Puerto Rico swallow-wort | Asclepiadaceae
|
| CYGR3 | Cynanchum grisebachianum (Schlechter) Alain | Grisebach's swallow-wort | Asclepiadaceae
|
| CYLA | Cynanchum laeve (Michx.) Pers. | honeyvine | Asclepiadaceae
|
| CYLI8 | Cynanchum ligulatum (Benth.) Woods. | Mexican swallow-wort | Asclepiadaceae
|
| CYLI3 | Cynanchum lineare (Bello) Alain | West Indian swallow-wort | Asclepiadaceae
|
| CYLO11 | Cynanchum louiseae Kartesz & Gandhi | Louis' swallow-wort | Asclepiadaceae
|
| CYMA3 | Cynanchum maccartii Shinners | MacCart's swallow-wort | Asclepiadaceae
|
| CYMA17 | Cynanchum maritimum (Jacq.) Jacq. | Matelea maritima | Asclepiadaceae
|
| CYME5 | Cynanchum medium auct. non R. Br. | Cynanchum rossicum | Asclepiadaceae
|
| CYMO6 | Cynanchum monense (Britt.) Alain | Mona Island swallow-wort | Asclepiadaceae
|
| CYNI | Cynanchum nigrum (L.) Pers., non Cav. | Cynanchum louiseae | Asclepiadaceae
|
| CYNO | Cynanchum northropiae (Schlechter) Alain | fragrant swallow-wort | Asclepiadaceae
|
| CYPA18 | Cynanchum palmeri (S. Wats.) Blake | Cynanchum racemosum var. unifarium | Asclepiadaceae
|
| CYPA14 | Cynanchum palmeri (S. Wats.) Shinners, non (S. Wats.) Blake | Cynanchum maccartii | Asclepiadaceae
|
| CYPA15 | Cynanchum palustre (Pursh) Heller | Cynanchum angustifolium | Asclepiadaceae
|
| CYPA10 | Cynanchum parviflorum Sw. | smallflower swallow-wort | Asclepiadaceae
|
| CYPE7 | Cynanchum peraffine Woods. | Cynanchum cubense | Asclepiadaceae
|
| CYPR11 | Cynanchum pringlei (Gray) Henrickson | Pringle's swallow-wort | Asclepiadaceae
|
| CYRAU | Cynanchum racemosum (Jacq.) Jacq. var. unifarium (Scheele) E. Sundell | talayote | Asclepiadaceae
|
| CYRA4 | Cynanchum racemosum (Jacq.) Jacq. | talayote | Asclepiadaceae
|
| CYRO8 | Cynanchum rossicum (Kleopov) Barbarich | European swallow-wort | Asclepiadaceae
|
| CYSC5 | Cynanchum scoparium Nutt. | leafless swallow-wort | Asclepiadaceae
|
| CYSI3 | Cynanchum sinaloense (Brandeg.) Woods. | Cynanchum ligulatum | Asclepiadaceae
|
| CYUN | Cynanchum unifarium (Scheele) Woods. | Cynanchum racemosum var. unifarium | Asclepiadaceae
|
| CYUT | Cynanchum utahense (Engelm.) Woods. | Utah swallow-wort | Asclepiadaceae
|
| CYVI3 | Cynanchum vincetoxicum (L.) Pers. | white swallow-wort | Asclepiadaceae
|
| CYWI4 | Cynanchum wigginsii Shinners | Wiggins' swallow-wort | Asclepiadaceae
|
| CYNAN | Cynanchum L. | swallow-wort | Asclepiadaceae
|
| CYCA | Cynara cardunculus L. | cardoon | Asteraceae
|
| CYSC2 | Cynara scolymus L. | globe artichoke | Asteraceae
|
| CYNAR | Cynara L. | cynara | Asteraceae
|
| CYAN9 | Cynoctonum angustifolium (Torr. & Gray) Small | Mitreola sessilifolia | Loganiaceae
|
| CYMI | Cynoctonum mitreola (L.) Britt. | Mitreola petiolata | Loganiaceae
|
| CYSEA | Cynoctonum sessilifolium J.F. Gmel. var. angustifolium Torr. & Gray | Mitreola sessilifolia | Loganiaceae
|
| CYSEM | Cynoctonum sessilifolium J.F. Gmel. var. microphyllum R.W. Long | Mitreola sessilifolia | Loganiaceae
|
| CYSE | Cynoctonum sessilifolium J.F. Gmel. | Mitreola sessilifolia | Loganiaceae
|
| CYSU2 | Cynoctonum succulentum R.W. Long | Mitreola petiolata | Loganiaceae
|
| CYAR7 | Cynodendron argenteum (Jacq.) Baehni | Chrysophyllum argenteum | Sapotaceae
|
| CYBI2 | Cynodendron bicolor (Poir.) Baehni | Chrysophyllum bicolor | Sapotaceae
|