| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CAHA16 | Castilleja haydenii (Gray) Cockerell | Hayden's Indian paintbrush | Scrophulariaceae
|
| CAHE10 | Castilleja henryae Pennell | Castilleja parviflora var. oreopola | Scrophulariaceae
|
| CAHIA3 | Castilleja hispida Benth. ssp. abbreviata (Fern.) Pennell | Castilleja hispida ssp. hispida | Scrophulariaceae
|
| CAHIA2 | Castilleja hispida Benth. ssp. acuta Pennell | acute Indian paintbrush | Scrophulariaceae
|
| CAHIB | Castilleja hispida Benth. ssp. brevilobata (Piper) Chuang & Heckard | short-lobe Indian paintbrush | Scrophulariaceae
|
| CAHIH2 | Castilleja hispida Benth. ssp. hispida | harsh Indian paintbrush | Scrophulariaceae
|
| CAHIA | Castilleja hispida Benth. var. acuta (Pennell) Pennell ex M.E. Peck | Castilleja hispida ssp. acuta | Scrophulariaceae
|
| CAHI9 | Castilleja hispida Benth. | harsh Indian paintbrush | Scrophulariaceae
|
| CAHOG | Castilleja hololeuca Greene ssp. grisea (Dunkle) Munz | Castilleja grisea | Scrophulariaceae
|
| CAHO6 | Castilleja hololeuca Greene | Castilleja lanata ssp. hololeuca | Scrophulariaceae
|
| CAHY5 | Castilleja hyetophila Pennell | coastal red Indian paintbrush | Scrophulariaceae
|
| CAHY6 | Castilleja hyperborea Pennell | northern Indian paintbrush | Scrophulariaceae
|
| CAIN24 | Castilleja inconstans Standl. | Castilleja miniata ssp. miniata | Scrophulariaceae
|
| CAIN13 | Castilleja indivisa Engelm. | entireleaf Indian paintbrush | Scrophulariaceae
|
| CAIN25 | Castilleja inflata Pennell | Castilleja affinis ssp. affinis | Scrophulariaceae
|
| CAING | Castilleja integra Gray var. gloriosa (Britt.) Cockerell | wholeleaf Indian paintbrush | Scrophulariaceae
|
| CAINI5 | Castilleja integra Gray var. integra | wholeleaf Indian paintbrush | Scrophulariaceae
|
| CAIN14 | Castilleja integra Gray | wholeleaf Indian paintbrush | Scrophulariaceae
|
| CAIN30 | Castilleja inverta (A. Nels. & J.F. Macbr.) Pennell & Ownbey | Castilleja pallescens var. inverta | Scrophulariaceae
|
| CAJE2 | Castilleja jepsonii Bacig. & Heckard | Castilleja subinclusa ssp. subinclusa | Scrophulariaceae
|
| CAKA6 | Castilleja kaibabensis N. Holmgren | Kaibab Plateau Indian paintbrush | Scrophulariaceae
|
| CALA51 | Castilleja labiata Pennell | Castilleja purpurea var. citrina | Scrophulariaceae
|
| CALA68 | Castilleja lacera (Benth.) Chuang & Heckard | cutleaf Indian paintbrush | Scrophulariaceae
|
| CALAH | Castilleja lanata Gray ssp. hololeuca (Greene) Chuang & Heckard | whitefelt Indian paintbrush | Scrophulariaceae
|
| CALAL11 | Castilleja lanata Gray ssp. lanata | Sierra woolly Indian paintbrush | Scrophulariaceae
|
| CALA24 | Castilleja lanata Gray | Sierra woolly Indian paintbrush | Scrophulariaceae
|
| CALA44 | Castilleja lapidicola Heller | Castilleja nana | Scrophulariaceae
|
| CALA69 | Castilleja lasiorhyncha (Gray) Chuang & Heckard | San Bernardino Mountains Indian paintbrush | Scrophulariaceae
|
| CALA45 | Castilleja lassenensis Eastw. | Castilleja lemmonii | Scrophulariaceae
|
| CALA50 | Castilleja latebracteata Pennell | Castilleja rigida | Scrophulariaceae
|
| CALAM3 | Castilleja latifolia Hook. & Arn. ssp. mendocinensis Eastw. | Castilleja mendocinensis | Scrophulariaceae
|
| CALA26 | Castilleja latifolia Hook. & Arn. | Monterey Indian paintbrush | Scrophulariaceae
|
| CALA52 | Castilleja lauta A. Nels. | Castilleja rhexiifolia | Scrophulariaceae
|
| CALA48 | Castilleja laxa Gray | Castilleja tenuiflora | Scrophulariaceae
|
| CALE18 | Castilleja lemmonii Gray | Lemmon's Indian paintbrush | Scrophulariaceae
|
| CALE35 | Castilleja leonardii Rydb. | Castilleja rhexiifolia | Scrophulariaceae
|
| CALE20 | Castilleja leschkeana J.T. Howell | Castilleja chrymactis | Scrophulariaceae
|
| CALE27 | Castilleja levisecta Greenm. | golden Indian paintbrush | Scrophulariaceae
|
| CALIO | Castilleja linariifolia Benth. var. omnipubescens (Pennell) Clokey | Castilleja linariifolia | Scrophulariaceae
|
| CALI4 | Castilleja linariifolia Benth. | Wyoming Indian paintbrush | Scrophulariaceae
|
| CALI20 | Castilleja lineariiloba (Benth.) Chuang & Heckard | sagebrush Indian paintbrush | Scrophulariaceae
|
| CALI14 | Castilleja linearis Rydb. | Castilleja linariifolia | Scrophulariaceae
|
| CALI5 | Castilleja lineata Greene | marshmeadow Indian paintbrush | Scrophulariaceae
|
| CALI13 | Castilleja linoides Gray | Castilleja flava var. flava | Scrophulariaceae
|
| CALI11 | Castilleja litoralis Pennell | Castilleja affinis ssp. litoralis | Scrophulariaceae
|
| CALO7 | Castilleja longispica A. Nels. | Castilleja pilosa var. longispica | Scrophulariaceae
|
| CALU18 | Castilleja ludoviciana Pennell | Castilleja coccinea | Scrophulariaceae
|
| CALU19 | Castilleja lutea Heller | Castilleja cusickii | Scrophulariaceae
|
| CALU20 | Castilleja luteovirens Rydb. | Castilleja sulphurea | Scrophulariaceae
|
| CALU14 | Castilleja lutescens (Greenm.) Rydb. | stiff yellow Indian paintbrush | Scrophulariaceae
|
| CAMA42 | Castilleja magnistylis Edwin | Castilleja viscidula | Scrophulariaceae
|
| CAMAE2 | Castilleja martinii Abrams ssp. ewanii (Eastw.) Munz | Castilleja applegatei ssp. martinii | Scrophulariaceae
|
| CAMAC2 | Castilleja martinii Abrams var. clokeyi (Pennell) N. Holmgren | Castilleja applegatei ssp. martinii | Scrophulariaceae
|
| CAMAE | Castilleja martinii Abrams var. ewanii (Eastw.) N. Holmgren | Castilleja applegatei ssp. martinii | Scrophulariaceae
|
| CAMA16 | Castilleja martinii Abrams | Castilleja applegatei ssp. martinii | Scrophulariaceae
|
| CAME24 | Castilleja mearnsii Pennell | Castilleja purpurea var. lindheimeri | Scrophulariaceae
|
| CAME21 | Castilleja mendocinensis (Eastw.) Pennell | Mendocino Coast Indian paintbrush | Scrophulariaceae
|
| CAME17 | Castilleja mexicana (Hemsl.) Gray | Mexican Indian paintbrush | Scrophulariaceae
|
| CAMID2 | Castilleja miniata Dougl. ex Hook. ssp. dixonii (Fern.) Kartesz, comb. nov. ined. | giant red Indian paintbrush | Scrophulariaceae
|
| CAMIE | Castilleja miniata Dougl. ex Hook. ssp. elata (Piper) Munz | Siskiyou Indian paintbrush | Scrophulariaceae
|
| CAMIM5 | Castilleja miniata Dougl. ex Hook. ssp. miniata | giant red Indian paintbrush | Scrophulariaceae
|
| CAMID | Castilleja miniata Dougl. ex Hook. var. dixonii (Fern.) A. Nels. & J.F. Macbr. | Castilleja miniata ssp. dixonii | Scrophulariaceae
|
| CAMI12 | Castilleja miniata Dougl. ex Hook. | giant red Indian paintbrush | Scrophulariaceae
|
| CAMIM6 | Castilleja minor (Gray) Gray ssp. minor | lesser Indian paintbrush | Scrophulariaceae
|
| CAMIS3 | Castilleja minor (Gray) Gray ssp. spiralis (Jepson) Chuang & Heckard | lesser Indian paintbrush | Scrophulariaceae
|
| CAMI13 | Castilleja minor (Gray) Gray | lesser Indian paintbrush | Scrophulariaceae
|
| CAMO16 | Castilleja mogollonica Pennell | Castilleja sulphurea | Scrophulariaceae
|
| CAMO8 | Castilleja mollis Pennell | softleaf Indian paintbrush | Scrophulariaceae
|
| CAMO20 | Castilleja montigena Heckard | Heckard's Indian paintbrush | Scrophulariaceae
|
| CANA3 | Castilleja nana Eastw. | dwarf alpine Indian paintbrush | Scrophulariaceae
|
| CANE8 | Castilleja neglecta Zeile | Castilleja affinis ssp. neglecta | Scrophulariaceae
|
| CANE18 | Castilleja nervata Eastw. | TransPecos Indian paintbrush | Scrophulariaceae
|
| CANI8 | Castilleja nivea Pennell & Ownbey | snow Indian paintbrush | Scrophulariaceae
|
| CAOB9 | Castilleja oblongifolia Gray | Castilleja miniata ssp. miniata | Scrophulariaceae
|
| CAOC4 | Castilleja occidentalis Torr. | western Indian paintbrush | Scrophulariaceae
|
| CAOR16 | Castilleja oregonensis Gandog. | Castilleja rhexiifolia | Scrophulariaceae
|
| CAORA | Castilleja oreopola Greenm. ssp. albida Pennell | Castilleja parviflora var. albida | Scrophulariaceae
|
| CAOR15 | Castilleja oreopola Greenm. | Castilleja parviflora var. oreopola | Scrophulariaceae
|
| CAOR4 | Castilleja oresbia Greenm. | pale Wallowa Indian paintbrush | Scrophulariaceae
|
| CAOR7 | Castilleja organorum Standl. | Organ Mountain Indian paintbrush | Scrophulariaceae
|
| CAOR21 | Castilleja ornata Eastw. | glowing Indian paintbrush | Scrophulariaceae
|
| CAOW | Castilleja ownbeyana Pennell | Castilleja chrysantha | Scrophulariaceae
|
| CAPAI | Castilleja pallescens (Gray) Greenm. var. inverta (A. Nels. & J.F. Macbr.) Edwin | pale Indian paintbrush | Scrophulariaceae
|
| CAPAP7 | Castilleja pallescens (Gray) Greenm. var. pallescens | pale Indian paintbrush | Scrophulariaceae
|
| CAPA25 | Castilleja pallescens (Gray) Greenm. | pale Indian paintbrush | Scrophulariaceae
|
| CAPAC | Castilleja pallida (L.) Spreng. ssp. caudata Pennell | Castilleja caudata var. caudata | Scrophulariaceae
|
| CAPAE | Castilleja pallida (L.) Spreng. ssp. elegans (Malte) Pennell | Castilleja elegans | Scrophulariaceae
|
| CAPAS | Castilleja pallida (L.) Spreng. ssp. septentrionalis (Lindl.) Scoggan | Castilleja septentrionalis | Scrophulariaceae
|
| CAPAC2 | Castilleja pallida (L.) Spreng. var. caudata (Pennell) Boivin | Castilleja caudata var. caudata | Scrophulariaceae
|
| CAPAE2 | Castilleja pallida (L.) Spreng. var. elegans (Malte) Boivin | Castilleja elegans | Scrophulariaceae
|
| CAPAS2 | Castilleja pallida (L.) Spreng. var. septentrionalis (Lindl.) Gray | Castilleja septentrionalis | Scrophulariaceae
|
| CAPAA3 | Castilleja parviflora Bong. var. albida (Pennell) Ownbey | smallflower Indian paintbrush | Scrophulariaceae
|
| CAPAO2 | Castilleja parviflora Bong. var. olympica (G.N. Jones) Ownbey | Olympic Indian paintbrush | Scrophulariaceae
|
| CAPAO | Castilleja parviflora Bong. var. oreopola (Greenm.) Ownbey | Henry Indian paintbrush | Scrophulariaceae
|
| CAPAP8 | Castilleja parviflora Bong. var. parviflora | smallflower Indian paintbrush | Scrophulariaceae
|
| CAPA26 | Castilleja parviflora Bong. | mountain Indian paintbrush | Scrophulariaceae
|
| CAPAR2 | Castilleja parvula Rydb. var. revealii (N. Holmgren) Atwood | Castilleja revealii | Scrophulariaceae
|
| CAPA46 | Castilleja parvula Rydb. | Tushar Plateau Indian paintbrush | Scrophulariaceae
|
| CAPAB2 | Castilleja patriotica Fern. var. blumeri (Standl.) Kearney & Peebles | Castilleja patriotica | Scrophulariaceae
|
| CAPA41 | Castilleja patriotica Fern. | Huachuca Mountain Indian paintbrush | Scrophulariaceae
|
| CAPA28 | Castilleja payneae Eastw. | Castilleja arachnoidea | Scrophulariaceae
|