| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CHCUC | Chorizanthe cuspidata S. Wats. var. cuspidata | San Francisco spineflower | Polygonaceae
|
| CHCUM | Chorizanthe cuspidata S. Wats. var. marginata Goodman | Chorizanthe cuspidata var. cuspidata | Polygonaceae
|
| CHCUV | Chorizanthe cuspidata S. Wats. var. villosa (Eastw.) Munz | San Francisco spineflower | Polygonaceae
|
| CHCU3 | Chorizanthe cuspidata S. Wats. | San Francisco spineflower | Polygonaceae
|
| CHDIN | Chorizanthe diffusa Benth. var. nivea (Curran) Hoover | Chorizanthe diffusa | Polygonaceae
|
| CHDI3 | Chorizanthe diffusa Benth. | diffuse spineflower | Polygonaceae
|
| CHDI7 | Chorizanthe discolor Nutt. | Chorizanthe staticoides | Polygonaceae
|
| CHDOH | Chorizanthe douglasii Benth. var. hartwegii Benth. | Chorizanthe robusta var. hartwegii | Polygonaceae
|
| CHDO2 | Chorizanthe douglasii Benth. | San Benito spineflower | Polygonaceae
|
| CHFE6 | Chorizanthe fernandina S. Wats. | Chorizanthe parryi var. fernandina | Polygonaceae
|
| CHFIF | Chorizanthe fimbriata Nutt. var. fimbriata | fringed spineflower | Polygonaceae
|
| CHFIL | Chorizanthe fimbriata Nutt. var. laciniata (Torr.) Jepson | fringed spineflower | Polygonaceae
|
| CHFI2 | Chorizanthe fimbriata Nutt. | fringed spineflower | Polygonaceae
|
| CHHO2 | Chorizanthe howellii Goodman | Mendocino spineflower | Polygonaceae
|
| CHIN11 | Chorizanthe insignis Curran | Aristocapsa insignis | Polygonaceae
|
| CHJO4 | Chorizanthe jonesiana Goodman | Chorizanthe procumbens | Polygonaceae
|
| CHLA17 | Chorizanthe laciniata Torr. | Chorizanthe fimbriata var. laciniata | Polygonaceae
|
| CHLA19 | Chorizanthe lastarriaea Parry | Lastarriaea coriacea | Polygonaceae
|
| CHLE11 | Chorizanthe leptoceras (Gray ex Benth.) S. Wats. | Dodecahema leptoceras | Polygonaceae
|
| CHLE6 | Chorizanthe leptotheca Goodman | Ramona spineflower | Polygonaceae
|
| CHME2 | Chorizanthe membranacea Benth. | pink spineflower | Polygonaceae
|
| CHNI6 | Chorizanthe nivea (Curran) Heller | Chorizanthe diffusa | Polygonaceae
|
| CHOB4 | Chorizanthe obovata Goodman | spoonsepal spineflower | Polygonaceae
|
| CHOR | Chorizanthe orcuttiana Parry | San Diego spineflower | Polygonaceae
|
| CHPAB | Chorizanthe palmeri S. Wats. var. biloba (Goodman) Munz | Chorizanthe biloba var. biloba | Polygonaceae
|
| CHPAV3 | Chorizanthe palmeri S. Wats. var. ventricosa (Goodman) Munz | Chorizanthe ventricosa | Polygonaceae
|
| CHPA8 | Chorizanthe palmeri S. Wats. | Palmer's spineflower | Polygonaceae
|
| CHPAF | Chorizanthe parryi S. Wats. var. fernandina (S. Wats.) Jepson | San Fernando Valley spineflower | Polygonaceae
|
| CHPAP2 | Chorizanthe parryi S. Wats. var. parryi | San Bernardino spineflower | Polygonaceae
|
| CHPA9 | Chorizanthe parryi S. Wats. | San Bernardino spineflower | Polygonaceae
|
| CHPEO | Chorizanthe perfoliata Gray var. opaca (Hoover) Munz | Mucronea perfoliata | Polygonaceae
|
| CHPE4 | Chorizanthe perfoliata Gray | Mucronea perfoliata | Polygonaceae
|
| CHPOL2 | Chorizanthe polygonoides Torr. & Gray ssp. longispina (Goodman) Munz | Chorizanthe polygonoides var. longispina | Polygonaceae
|
| CHPOL | Chorizanthe polygonoides Torr. & Gray var. longispina (Goodman) Munz | knotweed spineflower | Polygonaceae
|
| CHPOP5 | Chorizanthe polygonoides Torr. & Gray var. polygonoides | knotweed spineflower | Polygonaceae
|
| CHPO4 | Chorizanthe polygonoides Torr. & Gray | knotweed spineflower | Polygonaceae
|
| CHPRA | Chorizanthe procumbens Nutt. var. albiflora Goodman | Chorizanthe procumbens | Polygonaceae
|
| CHPR4 | Chorizanthe procumbens Nutt. | prostrate spineflower | Polygonaceae
|
| CHPUH2 | Chorizanthe pungens Benth. var. hartwegiana Reveal & Hardham | Hartweg's spineflower | Polygonaceae
|
| CHPUH | Chorizanthe pungens Benth. var. hartwegii (Benth.) Goodman | Chorizanthe robusta var. hartwegii | Polygonaceae
|
| CHPUN | Chorizanthe pungens Benth. var. nivea Curran | Chorizanthe diffusa | Polygonaceae
|
| CHPUP3 | Chorizanthe pungens Benth. var. pungens | Monterey spineflower | Polygonaceae
|
| CHPU3 | Chorizanthe pungens Benth. | Monterey spineflower | Polygonaceae
|
| CHRE | Chorizanthe rectispina Goodman | prickly spineflower | Polygonaceae
|
| CHRI | Chorizanthe rigida (Torr.) Torr. & Gray | devil's spineflower | Polygonaceae
|
| CHROH | Chorizanthe robusta Parry var. hartwegii (Benth.) Reveal & R. Morgan | robust spineflower | Polygonaceae
|
| CHROR | Chorizanthe robusta Parry var. robusta | robust spineflower | Polygonaceae
|
| CHRO | Chorizanthe robusta Parry | robust spineflower | Polygonaceae
|
| CHSP7 | Chorizanthe spathulata Small ex Rydb. | Chorizanthe brevicornu var. spathulata | Polygonaceae
|
| CHSP | Chorizanthe spinosa S. Wats. | Mojave spineflower | Polygonaceae
|
| CHSTC2 | Chorizanthe staticoides Benth. ssp. chrysacantha (Goodman) Munz | Chorizanthe staticoides | Polygonaceae
|
| CHSTB | Chorizanthe staticoides Benth. var. brevispina Goodman | Chorizanthe staticoides | Polygonaceae
|
| CHSTE | Chorizanthe staticoides Benth. var. elata Goodman | Chorizanthe staticoides | Polygonaceae
|
| CHSTL | Chorizanthe staticoides Benth. var. latiloba Goodman | Chorizanthe staticoides | Polygonaceae
|
| CHST4 | Chorizanthe staticoides Benth. | turkish rugging | Polygonaceae
|
| CHST5 | Chorizanthe stellulata Benth. | starlet spineflower | Polygonaceae
|
| CHTHM | Chorizanthe thurberi (Gray ex Benth.) S. Wats. var. macrotheca J.T. Howell | Centrostegia thurberi | Polygonaceae
|
| CHTH5 | Chorizanthe thurberi (Gray ex Benth.) S. Wats. | Centrostegia thurberi | Polygonaceae
|
| CHUN2 | Chorizanthe uncinata Nutt. | Chorizanthe procumbens | Polygonaceae
|
| CHUN | Chorizanthe uniaristata Torr. & Gray | oneawn spineflower | Polygonaceae
|
| CHVA | Chorizanthe valida S. Wats. | Sonoma spineflower | Polygonaceae
|
| CHVE3 | Chorizanthe ventricosa Goodman | Priest Valley spineflower | Polygonaceae
|
| CHVI14 | Chorizanthe villosa Eastw. | Chorizanthe cuspidata var. villosa | Polygonaceae
|
| CHVO2 | Chorizanthe vortriedei Brandeg. | Systenotheca vortriedei | Polygonaceae
|
| CHWA2 | Chorizanthe watsonii Torr. & Gray | fivetooth spineflower | Polygonaceae
|
| CHWH2 | Chorizanthe wheeleri S. Wats. | Santa Barbara spineflower | Polygonaceae
|
| CHXAL2 | Chorizanthe xanti S. Wats. ssp. leucotheca (Goodman) Munz | Chorizanthe xanti var. leucotheca | Polygonaceae
|
| CHXAL | Chorizanthe xanti S. Wats. var. leucotheca Goodman | Riverside spineflower | Polygonaceae
|
| CHXAX | Chorizanthe xanti S. Wats. var. xanti | Riverside spineflower | Polygonaceae
|
| CHXA2 | Chorizanthe xanti S. Wats. | Riverside spineflower | Polygonaceae
|
| CHORI2 | Chorizanthe R. Br. ex Benth. | spineflower | Polygonaceae
|
| CHBO10 | Christella boydiae (Eat.) Holttum | Thelypteris boydiae | Thelypteridaceae
|
| CHCY5 | Christella cyatheoides (Kaulfuss) Holttum | Thelypteris cyatheoides | Thelypteridaceae
|
| CHVE6 | Christia verspertilionis (L. f.) Bakh. f. | East Indian island pea | Fabaceae
|
| CHRIS2 | Christia Moench | island pea | Fabaceae
|
| CHMUM4 | Chromatochlamys muscorum (Fr.) H. Mayrh. & Poelt var. muscorum | | Thelenellaceae
|
| CHMUO | Chromatochlamys muscorum (Fr.) H. Mayrh. & Poelt var. octospora (Nyl.) H. Mayrh. & Poelt | | Thelenellaceae
|
| CHMU6 | Chromatochlamys muscorum (Fr.) H. Mayrh. & Poelt | | Thelenellaceae
|
| CHROM2 | Chromatochlamys Trevisan | chromatochlamys | Thelenellaceae
|
| CHBI3 | Chromolaena bigelovii (Gray) King & H.E. Robins. | Bigelow's thoroughwort | Asteraceae
|
| CHBO3 | Chromolaena borinquensis (Britt.) King & H.E. Robins. | limestone thoroughwort | Asteraceae
|
| CHCO9 | Chromolaena corymbosa (Aubl.) King & H.E. Robins. | Caribbean thoroughwort | Asteraceae
|
| CHFR4 | Chromolaena frustrata (B.L. Robins.) King & H.E. Robins. | Cape Sable thoroughwort | Asteraceae
|
| CHGE | Chromolaena geraniifolia (Urban) King & H.E. Robins. | geraniumleaf thoroughwort | Asteraceae
|
| CHIV | Chromolaena ivifolia (L.) King & H.E. Robins. | ivyleaf thoroughwort | Asteraceae
|
| CHOD | Chromolaena odorata (L.) King & H.E. Robins. | Jack in the bush | Asteraceae
|
| CHOT | Chromolaena oteroi (Monachino) King & H.E. Robins. | Mona Island thoroughwort | Asteraceae
|
| CHSI | Chromolaena sinuata (Lam.) King & H.E. Robins. | wavyleaf thoroughwort | Asteraceae
|
| CHROM3 | Chromolaena DC. | thoroughwort | Asteraceae
|
| CHMU5 | Chrosperma muscitoxicum (Walt.) Kuntze | Amianthium muscitoxicum | Liliaceae
|
| CHTI2 | Chrozophora tinctoria (L.) A. Juss. | giradol | Euphorbiaceae
|
| CHROZ | Chrozophora A. Juss. | chrozophora | Euphorbiaceae
|
| CHME3 | Chrysactinia mexicana Gray | damianita | Asteraceae
|
| CHRYS | Chrysactinia Gray | chrysactinia | Asteraceae
|
| CHLU4 | Chrysalidocarpus lutescens (Bory) H. Wendl. | Dypsis lutescens | Arecaceae
|
| CHCA25 | Chrysamphora californica (Torr.) Greene | Darlingtonia californica | Sarraceniaceae
|
| CHARP2 | Chrysanthemum arcticum L. var. polare (Hult�n) Boivin | Dendranthema arcticum ssp. polare | Asteraceae
|
| CHAR13 | Chrysanthemum arcticum L. | Dendranthema arcticum ssp. arcticum | Asteraceae
|
| CHBAT | Chrysanthemum balsamita (L.) Baill. var. tanacetoides Boiss. | Balsamita major | Asteraceae
|
| CHBA6 | Chrysanthemum balsamita (L.) Baill., non L. | Balsamita major | Asteraceae
|
| CHBIH | Chrysanthemum bipinnatum L. ssp. huronense (Nutt.) Hult�n | Tanacetum bipinnatum ssp. huronense | Asteraceae
|