| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CLDE2 | Clarkia delicata (Abrams) A. Nels. & J.F. Macbr. | Campo clarkia | Onagraceae
|
| CLDU | Clarkia dudleyana (Abrams) J.F. Macbr. | Dudley's clarkia | Onagraceae
|
| CLEL | Clarkia elegans Dougl. | Clarkia unguiculata | Onagraceae
|
| CLEP | Clarkia epilobioides (Nutt. ex Torr. & Gray) A. Nels. & J.F. Macbr. | canyon clarkia | Onagraceae
|
| CLEX | Clarkia exilis Lewis & Vasek | Kern River clarkia | Onagraceae
|
| CLFR3 | Clarkia franciscana Lewis & Raven | Presidio clarkia | Onagraceae
|
| CLGRA | Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. albicaulis (Jepson) H.F. & M.E. Lewis | whitestem clarkia | Onagraceae
|
| CLGRG2 | Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. gracilis | slender clarkia | Onagraceae
|
| CLGRS | Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. sonomensis (C.L. Hitchc.) H.F. & M.E. Lewis | Sonoma clarkia | Onagraceae
|
| CLGRT | Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. tracyi (Jepson) Abdel-Hamee & R. Snow | Tracy's clarkia | Onagraceae
|
| CLGR | Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. | slender clarkia | Onagraceae
|
| CLHE4 | Clarkia heterandra (Torr.) Lewis & Raven | mountain clarkia | Onagraceae
|
| CLIM | Clarkia imbricata H.F. & M.E. Lewis | Vine Hill clarkia | Onagraceae
|
| CLJO2 | Clarkia jolonensis Parnell | Jolon clarkia | Onagraceae
|
| CLLA | Clarkia lassenensis (Eastw.) H.F. & M.E. Lewis | Mt. Lassen clarkia | Onagraceae
|
| CLLE2 | Clarkia lewisii Raven & Parnell | Lewis' clarkia | Onagraceae
|
| CLLI | Clarkia lingulata H.F. & M.E. Lewis | Merced clarkia | Onagraceae
|
| CLMIL3 | Clarkia mildrediae (Heller) H.F. & M.E. Lewis ssp. lutescens (Heller) H.F. & M.E. Lewis | Mildred's clarkia | Onagraceae
|
| CLMIM | Clarkia mildrediae (Heller) H.F. & M.E. Lewis ssp. mildrediae | Mildred's clarkia | Onagraceae
|
| CLMI | Clarkia mildrediae (Heller) H.F. & M.E. Lewis | Mildred's clarkia | Onagraceae
|
| CLMO | Clarkia modesta Jepson | Waltham Creek clarkia | Onagraceae
|
| CLMOX | Clarkia mosquinii E. Small ssp. xerophila E. Small | Clarkia mosquinii | Onagraceae
|
| CLMO3 | Clarkia mosquinii E. Small | Mosquin's clarkia | Onagraceae
|
| CLNI | Clarkia nitens H.F. & M.E. Lewis | Clarkia speciosa ssp. nitens | Onagraceae
|
| CLPA18 | Clarkia parviflora Eastw. | Clarkia xantiana ssp. parviflora | Onagraceae
|
| CLPR | Clarkia prostrata H.F. & M.E. Lewis | prostrate clarkia | Onagraceae
|
| CLPU | Clarkia pulchella Pursh | pinkfairies | Onagraceae
|
| CLPUP | Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. purpurea | winecup clarkia | Onagraceae
|
| CLPUQ | Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. quadrivulnera (Dougl. ex Lindl.) H.F. & M.E. Lewis | winecup clarkia | Onagraceae
|
| CLPUV | Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. viminea (Dougl. ex Hook.) H.F. & M.E. Lewis | winecup clarkia | Onagraceae
|
| CLPU2 | Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. | winecup clarkia | Onagraceae
|
| CLQU | Clarkia quadrivulnera (Dougl. ex Lindl.) A. Nels. & J.F. Macbr. | Clarkia purpurea ssp. quadrivulnera | Onagraceae
|
| CLRH | Clarkia rhomboidea Dougl. ex Hook. | diamond clarkia | Onagraceae
|
| CLRO2 | Clarkia rostrata W.S. Davis | beaked clarkia | Onagraceae
|
| CLRUB | Clarkia rubicunda (Lindl.) H.F. & M.E. Lewis ssp. blasdalei (Jepson) H.F. & M.E. Lewis | Clarkia rubicunda | Onagraceae
|
| CLRU | Clarkia rubicunda (Lindl.) H.F. & M.E. Lewis | ruby chalice clarkia | Onagraceae
|
| CLSI | Clarkia similis Lewis & Ernst | Ramona clarkia | Onagraceae
|
| CLSPI | Clarkia speciosa H.F. & M.E. Lewis ssp. immaculata H.F. & M.E. Lewis | Pismo clarki | Onagraceae
|
| CLSPN | Clarkia speciosa H.F. & M.E. Lewis ssp. nitens (H.F. & M.E. Lewis) Lewis & Raven | redspot clarkia | Onagraceae
|
| CLSPP | Clarkia speciosa H.F. & M.E. Lewis ssp. polyantha H.F. & M.E. Lewis | redspot clarkia | Onagraceae
|
| CLSPS | Clarkia speciosa H.F. & M.E. Lewis ssp. speciosa | redspot clarkia | Onagraceae
|
| CLSP | Clarkia speciosa H.F. & M.E. Lewis | redspot clarkia | Onagraceae
|
| CLSP6 | Clarkia springvillensis Vasek | Springville clarkia | Onagraceae
|
| CLST3 | Clarkia stellata Mosquin | Lake Almanor clarkia | Onagraceae
|
| CLTEC | Clarkia tembloriensis Vasek ssp. calientensis (Vasek) Holsinger | Vasek's clarkia | Onagraceae
|
| CLTET | Clarkia tembloriensis Vasek ssp. tembloriensis | Temblor Range clarkia | Onagraceae
|
| CLTE5 | Clarkia tembloriensis Vasek | Temblor Range clarkia | Onagraceae
|
| CLUN | Clarkia unguiculata Lindl. | elegant clarkia | Onagraceae
|
| CLVI10 | Clarkia viminea (Dougl. ex Hook.) A. Nels. & J.F. Macbr. | Clarkia purpurea ssp. viminea | Onagraceae
|
| CLVI2 | Clarkia virgata Greene | Sierra clarkia | Onagraceae
|
| CLWI | Clarkia williamsonii (Dur. & Hilg.) H.F. & M.E. Lewis | Fort Miller clarkia | Onagraceae
|
| CLXAP | Clarkia xantiana Gray ssp. parviflora (Eastw.) H.F. Lewis & Raven | Kern Canyon clarkia | Onagraceae
|
| CLXAX | Clarkia xantiana Gray ssp. xantiana | gunsight clarkia | Onagraceae
|
| CLXA | Clarkia xantiana Gray | gunsight clarkia | Onagraceae
|
| CLARK | Clarkia Pursh | clarkia | Onagraceae
|
| CLPAR2 | Clasmatodon parvulus (Hampe) Hook. & Wils. ex Sull. in Gray var. rupestris Sull. & Lesq. in Lesq. & James | Clasmatodon parvulus | Fabroniaceae
|
| CLPA17 | Clasmatodon parvulus (Hampe) Hook. & Wils. ex Sull. in Gray | clasmatodon moss | Fabroniaceae
|
| CLRU5 | Clasmatodon rupestris (Sull. & Lesq. in Lesq. & James) Kindb. | Clasmatodon parvulus | Fabroniaceae
|
| CLASM | Clasmatodon Hook. & Wils. in Wils. | clasmatodon moss | Fabroniaceae
|
| CLAM2 | Clathroporina amygdalina sensu Fink | Julella sublactea | Thelenellaceae
|
| CLCO14 | Clathroporina confinis Mull. Arg. | Porina nuculastrum | Trichotheliaceae
|
| CLDI13 | Clathroporina diphloea Zahlbr. | Laurera megasperma | Trypetheliaceae
|
| CLEX3 | Clathroporina exiguella Zahlbr. | Julella sublactea | Thelenellaceae
|
| CLIS2 | Clathroporina isidiifera R. C. Harris | | Trichotheliaceae
|
| CLNU2 | Clathroporina nuculastrum Mull. Arg. | Porina nuculastrum | Trichotheliaceae
|
| CLSU19 | Clathroporina subpungens (Malme) R. C. Harris | | Trichotheliaceae
|
| CLTE13 | Clathroporina tetracerae (Ach.) R. C. Harris | | Trichotheliaceae
|
| CLATH | Clathroporina Mull. Arg. | clathroporina | Trichotheliaceae
|
| CLDE9 | Clausena dentata (Willd.) M. Roemer | dentate clausena | Rutaceae
|
| CLLA9 | Clausena lansium (Lour.) Skeels | wampi | Rutaceae
|
| CLAUS | Clausena Burman f. | clausena | Rutaceae
|
| CLTE6 | Clausenellia ternata (Michx.) A.& D. L�ve | Sedum ternatum | Crassulaceae
|
| CLIM3 | Clauzadea immersa (Hoffm.) Hafellner & Bellem. | | Porpidiaceae
|
| CLMO9 | Clauzadea monticola (Ach. ex Schaerer) Hefellner & Bellem. | | Porpidiaceae
|
| CLAUZ | Clauzadea Hafellner & Bellem. | clauzadea | Porpidiaceae
|
| CLMA19 | Clauzadeana macula (Taylor) Coppins & Rambold | | Lecanoraceae
|
| CLAUZ2 | Clauzadeana Roux | clauzadeana | Lecanoraceae
|
| CLTE7 | Clavenna tetrandra (L.) Standl. | Lucya tetrandra | Rubiaceae
|
| CLACG2 | Claytonia acutifolia Pallas ex J.A. Schultes ssp. graminifolia Hult�n | Claytonia eschscholtzii | Portulacaceae
|
| CLAR2 | Claytonia arctica M.F. Adams | arctic springbeauty | Portulacaceae
|
| CLAR3 | Claytonia arenicola Henderson | sand springbeauty | Portulacaceae
|
| CLBE | Claytonia bellidifolia Rydb. | Claytonia megarhiza var. bellidifolia | Portulacaceae
|
| CLBO5 | Claytonia bostockii Porsild | Montia bostockii | Portulacaceae
|
| CLCAC | Claytonia caroliniana Michx. var. caroliniana | Carolina springbeauty | Portulacaceae
|
| CLCAL2 | Claytonia caroliniana Michx. var. lanceolata (Pursh) S. Wats. | Claytonia lanceolata var. lanceolata | Portulacaceae
|
| CLCAL | Claytonia caroliniana Michx. var. lewisii McNeill | Carolina springbeauty | Portulacaceae
|
| CLCAS | Claytonia caroliniana Michx. var. spathulifolia (Salisb.) W.H. Lewis | Claytonia caroliniana var. lewisii | Portulacaceae
|
| CLCAT | Claytonia caroliniana Michx. var. tuberosa (Pallas ex J.A. Schultes) Boivin | Claytonia tuberosa var. tuberosa | Portulacaceae
|
| CLCA | Claytonia caroliniana Michx. | Carolina springbeauty | Portulacaceae
|
| CLCH2 | Claytonia chamissoi Ledeb. ex Spreng. | Montia chamissoi | Portulacaceae
|
| CLCH | Claytonia chrysantha Greene | Claytonia lanceolata var. chrysantha | Portulacaceae
|
| CLCO3 | Claytonia cordifolia S. Wats. | heartleaf springbeauty | Portulacaceae
|
| CLCZ | Claytonia czukczorum Volk. | Claytonia tuberosa var. czukczorum | Portulacaceae
|
| CLDI8 | Claytonia dichotoma Nutt. | Montia dichotoma | Portulacaceae
|
| CLDI6 | Claytonia diffusa Nutt. | Montia diffusa | Portulacaceae
|
| CLES | Claytonia eschscholtzii Cham. | grassleaf springbeauty | Portulacaceae
|
| CLEXE2 | Claytonia exigua Torr. & Gray ssp. exigua | serpentine springbeauty | Portulacaceae
|
| CLEXG2 | Claytonia exigua Torr. & Gray ssp. glauca (Torr. & Gray) J.M. Miller & K. Chambers | serpentine springbeauty | Portulacaceae
|
| CLEX2 | Claytonia exigua Torr. & Gray | serpentine springbeauty | Portulacaceae
|
| CLFL4 | Claytonia flagellaris Bong. | Montia parvifolia ssp. flagellaris | Portulacaceae
|
| CLFL3 | Claytonia flava A. Nels. | Claytonia lanceolata var. flava | Portulacaceae
|