| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CHEL3 | Chloris elata Desv. | tall windmill grass | Poaceae
|
| CHFL7 | Chloris floridana (Chapman) Wood | Eustachys floridana | Poaceae
|
| CHGA2 | Chloris gayana Kunth | Rhodes grass | Poaceae
|
| CHGL11 | Chloris glauca (Chapman) Wood | Eustachys glauca | Poaceae
|
| CHIN4 | Chloris inflata Link | Chloris barbata | Poaceae
|
| CHLA3 | Chloris latisquamea Nash | Chloris subdolichostachya | Poaceae
|
| CHME4 | Chloris mendocina Phil. | Chloris crinita | Poaceae
|
| CHNE10 | Chloris neglecta Nash | Eustachys neglecta | Poaceae
|
| CHPA20 | Chloris paraguaiensis Steud. | Chloris barbata | Poaceae
|
| CHPE80 | Chloris pectinata Benth. | comb windmill grass | Poaceae
|
| CHPE8 | Chloris petraea Sw. | Eustachys petraea | Poaceae
|
| CHPL2 | Chloris pluriflora (Fourn.) W.D. Clayton | multiflower false Rhodes grass | Poaceae
|
| CHPO10 | Chloris polydactyla Sw. | Chloris elata | Poaceae
|
| CHPR3 | Chloris prieurii Kunth | Enteropogon prieurii | Poaceae
|
| CHRA | Chloris radiata (L.) Sw. | radiate fingergrass | Poaceae
|
| CHSA3 | Chloris sagraeana A. Rich. | roadside windmill grass | Poaceae
|
| CHSU3 | Chloris �subdolichostachya Muell. (pro sp.) | shortspike windmill grass | Poaceae
|
| CHSU4 | Chloris submutica Kunth | Mexican windmill grass | Poaceae
|
| CHTE | Chloris texensis Nash | Texas windmill grass | Poaceae
|
| CHTR | Chloris truncata R. Br. | Australian fingergrass | Poaceae
|
| CHVE | Chloris ventricosa R. Br. | Australian windmill grass | Poaceae
|
| CHVE2 | Chloris verticillata Nutt. | tumble windmill grass | Poaceae
|
| CHVI4 | Chloris virgata Sw. | feather fingergrass | Poaceae
|
| CHLOR | Chloris Sw. | windmill grass | Poaceae
|
| CHHA | Chlorocrambe hastata (S. Wats.) Rydb. | spearhead | Brassicaceae
|
| CHLOR2 | Chlorocrambe Rydb. | chlorocrambe | Brassicaceae
|
| CHAL16 | Chlorocrepis albiflora (Hook.) W.A. Weber | Hieracium albiflorum | Asteraceae
|
| CHFE5 | Chlorocrepis fendleri (Schultz-Bip.) W.A. Weber | Hieracium fendleri var. fendleri | Asteraceae
|
| CHTRG | Chlorocrepis tristis (Willd. ex Spreng.) A.& D. L�ve ssp. gracilis (Hook.) W.A. Weber | Hieracium gracile var. gracile | Asteraceae
|
| CHTR7 | Chlorocrepis tristis (Willd. ex Spreng.) A.& D. L�ve | Hieracium triste var. triste | Asteraceae
|
| CHAN2 | Chlorogalum angustifolium Kellogg | narrowleaf soap plant | Liliaceae
|
| CHGR3 | Chlorogalum grandiflorum Hoover | red hills soap plant | Liliaceae
|
| CHPA7 | Chlorogalum parviflorum S. Wats. | smallflower soap plant | Liliaceae
|
| CHPOD | Chlorogalum pomeridianum (DC.) Kunth var. divaricatum (Lindl.) Hoover | wavyleaf soap plant | Liliaceae
|
| CHPOM | Chlorogalum pomeridianum (DC.) Kunth var. minus Hoover | wavyleaf soap plant | Liliaceae
|
| CHPOP4 | Chlorogalum pomeridianum (DC.) Kunth var. pomeridianum | wavyleaf soap plant | Liliaceae
|
| CHPO3 | Chlorogalum pomeridianum (DC.) Kunth | wavyleaf soap plant | Liliaceae
|
| CHPUP2 | Chlorogalum purpureum Brandeg. var. purpureum | purple amole | Liliaceae
|
| CHPUR | Chlorogalum purpureum Brandeg. var. reductum Hoover | Camatta Canyon amole | Liliaceae
|
| CHPU2 | Chlorogalum purpureum Brandeg. | purple amole | Liliaceae
|
| CHLOR3 | Chlorogalum Kunth | soapplant | Liliaceae
|
| CHEB | Chloroleucon ebano (Berl.) L. Rico | Ebenopsis ebano | Fabaceae
|
| CHEX5 | Chlorophora excelsa (Welw.) Benth. | african teak | Moraceae
|
| CHTI | Chlorophora tinctoria (L.) Gaud. ex Benth. & Hook. f. | Maclura tinctoria | Moraceae
|
| CHLOR4 | Chlorophora Gaud. | african teak | Moraceae
|
| CHCA28 | Chlorophytum capense (L.) Voss | bracketplant | Liliaceae
|
| CHLOR5 | Chlorophytum Ker-Gawl. | chlorophytum | Liliaceae
|
| CHAR4 | Choisya arizonica Standl. | Choisya dumosa var. arizonica | Rutaceae
|
| CHDUA | Choisya dumosa (Torr.) Gray var. arizonica (Standl.) L. Benson | Arizonia orange | Rutaceae
|
| CHDUD | Choisya dumosa (Torr.) Gray var. dumosa | Mexican orange | Rutaceae
|
| CHDUM | Choisya dumosa (Torr.) Gray var. mollis (Standl.) L. Benson | Mexican orange | Rutaceae
|
| CHDU | Choisya dumosa (Torr.) Gray | Mexican orange | Rutaceae
|
| CHMO | Choisya mollis Standl. | Choisya dumosa var. mollis | Rutaceae
|
| CHOIS | Choisya Kunth | Mexican orange | Rutaceae
|
| CHJU | Chondrilla juncea L. | hogbite | Asteraceae
|
| CHOND | Chondrilla L. | chondrilla | Asteraceae
|
| CHTO5 | Chondrodendron tomentosum Ruiz & Pavon | pareira | Menispermaceae
|
| CHOND2 | Chondrodendron Ruiz & Pavon | chondrodendron | Menispermaceae
|
| CHNU6 | Chondrophora nudata (Michx.) Britt. | Bigelowia nudata ssp. nudata | Asteraceae
|
| CHVI18 | Chondrophora virgata (Nutt.) Greene | Bigelowia nudata ssp. nudata | Asteraceae
|
| CHAQ | Chondrophylla aquatica auct. non (L.) W.A. Weber | Gentiana fremontii | Gentianaceae
|
| CHFR6 | Chondrophylla fremontii (Torr.) A. Nels. | Gentiana fremontii | Gentianaceae
|
| CHNU4 | Chondrophylla nutans (Bunge) W.A. Weber | Gentiana nutans | Gentianaceae
|
| CHPAN3 | Chondrosea paniculata P. Mill. ssp. neogaea (Butters) A. L�ve | Saxifraga paniculata ssp. neogaea | Saxifragaceae
|
| CHBA12 | Chondrosum barbata (Lagasca) W.D. Clayton | Bouteloua barbata | Poaceae
|
| CHER4 | Chondrosum eriopodum Torr. | Bouteloua eriopoda | Poaceae
|
| CHEX3 | Chondrosum exile Fourn. | Bouteloua barbata | Poaceae
|
| CHGR15 | Chondrosum gracile Willd. ex Kunth | Bouteloua gracilis | Poaceae
|
| CHHI9 | Chondrosum hirsutum (Lag.) Kunth | Bouteloua hirsuta var. hirsuta | Poaceae
|
| CHHU5 | Chondrosum humboldtianum Kunth | Bouteloua chondrosioides | Poaceae
|
| CHMI15 | Chondrosum microstachyum Fourn. | Bouteloua barbata | Poaceae
|
| CHOL5 | Chondrosum oligostachyum (Nutt.) Torr. | Bouteloua gracilis | Poaceae
|
| CHPA19 | Chondrosum parryi Fourn. | Bouteloua parryi | Poaceae
|
| CHPO9 | Chondrosum polystachyum Benth. | Bouteloua barbata | Poaceae
|
| CHPR11 | Chondrosum procumbens Desv. ex Beauv. | Bouteloua simplex | Poaceae
|
| CHPR12 | Chondrosum prostratum (Lag.) Sweet | Bouteloua simplex | Poaceae
|
| CHSU12 | Chondrosum subscorpioides C. Muell. | Bouteloua barbata | Poaceae
|
| CHTR9 | Chondrosum trinii Fourn. | Bouteloua trifida var. burkii | Poaceae
|
| CHDO6 | Chonecolea doellingeri (Nees) Grolle | | Chonecoleaceae
|
| CHONE | Chonecolea Grolle | | Chonecoleaceae
|
| CHGA5 | Choretis galvestonensis Herbert | Hymenocallis galvestonensis | Liliaceae
|
| CHSP13 | Chorisia speciosa A. St.-Hil. | Ceiba speciosa | Bombacaceae
|
| CHTE2 | Chorispora tenella (Pallas) DC. | crossflower | Brassicaceae
|
| CHORI | Chorispora R. Br. ex DC. | chorispora | Brassicaceae
|
| CHANE | Chorizanthe angustifolia Nutt. var. eastwoodiae Goodman | Chorizanthe angustifolia | Polygonaceae
|
| CHAN3 | Chorizanthe angustifolia Nutt. | narrowleaf spineflower | Polygonaceae
|
| CHBIB | Chorizanthe biloba Goodman var. biloba | twolobe spineflower | Polygonaceae
|
| CHBII | Chorizanthe biloba Goodman var. immemora Reveal & Hardham | twolobe spineflower | Polygonaceae
|
| CHBI2 | Chorizanthe biloba Goodman | twolobe spineflower | Polygonaceae
|
| CHBL | Chorizanthe blakleyi Hardham | Blakley's spineflower | Polygonaceae
|
| CHBRS3 | Chorizanthe brevicornu Torr. ssp. spathulata (Small ex Rydb.) Munz | Chorizanthe brevicornu var. spathulata | Polygonaceae
|
| CHBRB | Chorizanthe brevicornu Torr. var. brevicornu | brittle spineflower | Polygonaceae
|
| CHBRS | Chorizanthe brevicornu Torr. var. spathulata (Small ex Rydb.) C.L. Hitchc. | brittle spineflower | Polygonaceae
|
| CHBR | Chorizanthe brevicornu Torr. | brittle spineflower | Polygonaceae
|
| CHBR2 | Chorizanthe breweri S. Wats. | San Luis Obispo spineflower | Polygonaceae
|
| CHCAS | Chorizanthe californica (Benth.) Gray var. suksdorfii J.F. Macbr. | Mucronea californica | Polygonaceae
|
| CHCA22 | Chorizanthe californica (Benth.) Gray | Mucronea californica | Polygonaceae
|
| CHCHC2 | Chorizanthe chrysacantha Goodman var. compacta Goodman | Chorizanthe staticoides | Polygonaceae
|
| CHCH9 | Chorizanthe chrysacantha Goodman | Chorizanthe staticoides | Polygonaceae
|
| CHCL2 | Chorizanthe clevelandii Parry | Cleveland's spineflower | Polygonaceae
|
| CHCO21 | Chorizanthe coriacea Goodman | Lastarriaea coriacea | Polygonaceae
|