| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CYPA9 | Cynodendron pauciflorum (Lam.) Baehni | Chrysophyllum pauciflorum | Sapotaceae
|
| CYAE2 | Cynodon aethiopicus W.D. Clayton & Harlan | Ethiopian dogstooth grass | Poaceae
|
| CYBR14 | Cynodon bradleyi Stent | cynodon | Poaceae
|
| CYDA | Cynodon dactylon (L.) Pers. | Bermudagrass | Poaceae
|
| CYMA2 | Cynodon magennisii Hurcombe | Magennis' dogstooth grass | Poaceae
|
| CYNLN | Cynodon nlemfuensis Vanderyst var. nlemfuensis | African Bermudagrass | Poaceae
|
| CYNLR | Cynodon nlemfuensis Vanderyst var. robustus W.D. Clayton & Harlan | African Bermudagrass | Poaceae
|
| CYNL80 | Cynodon nlemfuensis Vanderyst | African Bermudagrass | Poaceae
|
| CYPL2 | Cynodon plectostachyus (K. Schum.) Pilger | stargrass | Poaceae
|
| CYTR | Cynodon transvaalensis Burtt-Davy | African dogstooth grass | Poaceae
|
| CYNOD | Cynodon L.C. Rich. | Bermudagrass | Poaceae
|
| CYAL5 | Cynodontium alpestre (Wahlenb.) Milde | cynodontium moss | Dicranaceae
|
| CYGL6 | Cynodontium glaucescens (Lindb. & Arnell) Par. | cynodontium moss | Dicranaceae
|
| CYGR15 | Cynodontium gracilescens (Web. & Mohr) Schimp. | cynodontium moss | Dicranaceae
|
| CYJE | Cynodontium jenneri (Schimp. in Howie) Stirt. | Jenner's cynodontium moss | Dicranaceae
|
| CYPOL2 | Cynodontium polycarpon (Hedw.) Schimp. var. laxirete (Dix.) Dix. | Cynodontium jenneri | Dicranaceae
|
| CYPO8 | Cynodontium polycarpon (Hedw.) Schimp. | cynodontium moss | Dicranaceae
|
| CYSC9 | Cynodontium schisti (Web. & Mohr) Lindb. | schist cynodontium moss | Dicranaceae
|
| CYST70 | Cynodontium strumiferum (Hedw.) Lindb. | cynodontium moss | Dicranaceae
|
| CYST6 | Cynodontium strumulosum C. M�ll. & Kindb. in Mac. & Kindb. | cynodontium moss | Dicranaceae
|
| CYTE13 | Cynodontium tenellum (Bruch & Schimp. in B.S.G.) Limpr. | cynodontium moss | Dicranaceae
|
| CYTO2 | Cynodontium torquescens Limpr. | Cynodontium tenellum | Dicranaceae
|
| CYVI9 | Cynodontium virens (Hedw.) Schimp. | Oncophorus virens | Dicranaceae
|
| CYWA12 | Cynodontium wahlenbergii (Brid.) Hartm. | Oncophorus wahlenbergii | Dicranaceae
|
| CYNOD3 | Cynodontium Bruch & Schimp. ex Schimp. | cynodontium moss | Dicranaceae
|
| CYAM3 | Cynoglossum amabile Stapf & Drummond | Chinese hound's tongue | Boraginaceae
|
| CYBO | Cynoglossum boreale Fern. | Cynoglossum virginianum var. boreale | Boraginaceae
|
| CYFU8 | Cynoglossum furcatum Wallich ex Roxb. | Cynoglossum zeylanicum | Boraginaceae
|
| CYGL8 | Cynoglossum glochidiatum Wallich ex Benth. | prickly hound's tongue | Boraginaceae
|
| CYGR | Cynoglossum grande Dougl. ex Lehm. | Pacific hound's tongue | Boraginaceae
|
| CYLI12 | Cynoglossum linifolium L. | Omphalodes linifolia | Boraginaceae
|
| CYMI3 | Cynoglossum microglochin Benth. | smallbristle hound's tongue | Boraginaceae
|
| CYOC | Cynoglossum occidentale Gray | western hound's tongue | Boraginaceae
|
| CYOF | Cynoglossum officinale L. | gypsyflower | Boraginaceae
|
| CYPE8 | Cynoglossum penicillatum Hook. & Arn. | Pectocarya penicillata | Boraginaceae
|
| CYVIB | Cynoglossum virginianum L. var. boreale (Fern.) Cooperrider | wild comfrey | Boraginaceae
|
| CYVIV | Cynoglossum virginianum L. var. virginianum | wild comfrey | Boraginaceae
|
| CYVI | Cynoglossum virginianum L. | wild comfrey | Boraginaceae
|
| CYWA9 | Cynoglossum wallichii G. Don | Cynoglossum glochidiatum | Boraginaceae
|
| CYZE | Cynoglossum zeylanicum (Vahl) Thunb. ex Lehm. | Ceylon hound's tongue | Boraginaceae
|
| CYNOG | Cynoglossum L. | hound's tongue | Boraginaceae
|
| CYAL7 | Cynomarathrum alpinum (S. Wats.) Coult. & Rose | Lomatium graveolens var. alpinum | Apiaceae
|
| CYBR8 | Cynomarathrum brandegeei Coult. & Rose | Lomatium brandegeei | Apiaceae
|
| CYNU5 | Cynomarathrum nuttallii (Gray) Coult. & Rose | Lomatium nuttallii | Apiaceae
|
| CYPO2 | Cynometra portoricensis Krug & Urban | oreganillo falso | Fabaceae
|
| CYRA8 | Cynometra ramiflora L. | cynometra | Fabaceae
|
| CYNOM | Cynometra L. | cynometra | Fabaceae
|
| CYDI2 | Cynosciadium digitatum DC. | finger dogshade | Apiaceae
|
| CYPI6 | Cynosciadium pinnatum DC. | Limnosciadium pinnatum | Apiaceae
|
| CYNOS | Cynosciadium DC. | cynosciadium | Apiaceae
|
| CYAE3 | Cynosurus aegyptius L. | Dactyloctenium aegyptium | Poaceae
|
| CYAU3 | Cynosurus aureus L. | Lamarckia aurea | Poaceae
|
| CYCR | Cynosurus cristatus L. | crested dogstail grass | Poaceae
|
| CYDU4 | Cynosurus durus L. | Sclerochloa dura | Poaceae
|
| CYEC | Cynosurus echinatus L. | bristly dogstail grass | Poaceae
|
| CYIN7 | Cynosurus indicus L. | Eleusine indica | Poaceae
|
| CYTR8 | Cynosurus tristachyus Lam. | Eleusine tristachya | Poaceae
|
| CYVI12 | Cynosurus virgatus L. | Leptochloa virgata | Poaceae
|
| CYNOS2 | Cynosurus L. | dogstail grass | Poaceae
|
| CYFL7 | Cynoxylon floridum (L.) Raf. ex B.D. Jackson | Cornus florida | Cornaceae
|
| CYDA5 | Cynthia dandelion (L.) DC. | Krigia dandelion | Asteraceae
|
| CYMO9 | Cynthia montana (Michx.) Standl. | Krigia montana | Asteraceae
|
| CYVI13 | Cynthia virginica (L.) D. Don, non Hyoseris virginica L. | Krigia biflora var. biflora | Asteraceae
|
| CYVI14 | Cynthia viridis Standl. | Krigia biflora var. viridis | Asteraceae
|
| CYDR | Cypella drummondii Graham | Alophia drummondii | Iridaceae
|
| CYAC6 | Cyperus acicularis Schrad. ex Nees | Cyperus odoratus | Cyperaceae
|
| CYAC2 | Cyperus acuminatus Torr. & Hook. ex Torr. | tapertip flatsedge | Cyperaceae
|
| CYAG | Cyperus aggregatus (Willd.) Endl. | inflatedscale flatsedge | Cyperaceae
|
| CYAL | Cyperus albomarginatus (Mart. & Schrad. ex Nees) Steud. | Cyperus flavicomus | Cyperaceae
|
| CYAL6 | Cyperus alopecuroides Rottb. | foxtail flatsedge | Cyperaceae
|
| CYALF | Cyperus alternifolius L. ssp. flabelliformis (Rottb.) K�kenth. | Cyperus involucratus | Cyperaceae
|
| CYAL2 | Cyperus alternifolius auct. non L. | Cyperus involucratus | Cyperaceae
|
| CYAMM | Cyperus amabilis Vahl var. macrostachyus (Boeckl.) K�kenth. | Cyperus amabilis | Cyperaceae
|
| CYAM | Cyperus amabilis Vahl | foothill flatsedge | Cyperaceae
|
| CYAM2 | Cyperus amuricus Maxim. | Asian flatsedge | Cyperaceae
|
| CYARR | Cyperus aristatus Rottb. var. runyonii O'Neill | Cyperus squarrosus | Cyperaceae
|
| CYAR3 | Cyperus aristatus Rottb. | Cyperus squarrosus | Cyperaceae
|
| CYAR4 | Cyperus articulatus L. | jointed flatsedge | Cyperaceae
|
| CYAS4 | Cyperus asper (Liebm.) O'Neill | Cyperus mutisii | Cyperaceae
|
| CYAU2 | Cyperus auriculatus Nees & Meyen ex Kunth | eared flatsedge | Cyperaceae
|
| CYBI6 | Cyperus bipartitus Torr. | slender flatsedge | Cyperaceae
|
| CYBL2 | Cyperus blodgettii Britt. | Cyperus retrorsus var. retrorsus | Cyperaceae
|
| CYBR2 | Cyperus brevifolioides Thieret & Delahoussaye | Kyllinga gracillima | Cyperaceae
|
| CYBRL | Cyperus brevifolius (Rottb.) Endl. ex Hassk. var. leiolepis (Franch. & Savigny) T. Koyama | Kyllinga gracillima | Cyperaceae
|
| CYBR | Cyperus brevifolius (Rottb.) Endl. ex Hassk. | Kyllinga brevifolia | Cyperaceae
|
| CYBR11 | Cyperus brunneus Sw. | Cyperus planifolius | Cyperaceae
|
| CYBU6 | Cyperus buckleyi Britt. | Cyperus spectabilis | Cyperaceae
|
| CYBU4 | Cyperus bushii Britt. | Cyperus lupulinus ssp. macilentus | Cyperaceae
|
| CYCA18 | Cyperus calcicola Britt. | Caribbean flatsedge | Cyperaceae
|
| CYCA15 | Cyperus careyi Britt. | Cyperus laevigatus | Cyperaceae
|
| CYCA17 | Cyperus cayennensis (Lam.) Britt., non Willd. ex Link | Cyperus aggregatus | Cyperaceae
|
| CYCE | Cyperus cephalanthus Torr. & Hook. | buttonbush flatsedge | Cyperaceae
|
| CYCO | Cyperus compressus L. | poorland flatsedge | Cyperaceae
|
| CYCO2 | Cyperus confertus Sw. | West Indian flatsedge | Cyperaceae
|
| CYCO3 | Cyperus congestus Vahl | clustered flatsedge | Cyperaceae
|
| CYCR6 | Cyperus croceus Vahl | Baldwin's flatsedge | Cyperaceae
|
| CYCU | Cyperus cuspidatus Kunth | coastal plain flatsedge | Cyperaceae
|
| CYCY4 | Cyperus cylindricus (Ell.) Britt. | Cyperus retrorsus var. retrorsus | Cyperaceae
|
| CYCY | Cyperus cyperinus (Retz.) Sur. | Old World flatsedge | Cyperaceae
|
| CYCY2 | Cyperus cyperoides (L.) Kuntze | Pacific island flatsedge | Cyperaceae
|
| CYDE9 | Cyperus �deamii O'Neill (pro sp.) | | Cyperaceae
|