| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CAMA35 | Caloplaca marina (Wedd.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAMI38 | Caloplaca microphyllina (Tuck.) Hasse | orange lichen | Teloschistaceae
|
| CAMI39 | Caloplaca microthallina (Wedd.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAMO26 | Caloplaca modesta (Zahlbr.) Fink | orange lichen | Teloschistaceae
|
| CAMO27 | Caloplaca montana (de Lesd.) | northern orange lichen | Teloschistaceae
|
| CAMU22 | Caloplaca murorum (Hoffm.) Th. Fr. | Caloplaca saxicola | Teloschistaceae
|
| CANE16 | Caloplaca neonii de Lesd. | Neon's orange lichen | Teloschistaceae
|
| CANE29 | Caloplaca neotropica Wetmore | orange lichen | Teloschistaceae
|
| CANI12 | Caloplaca nivalis (Korber) Th. Fr. | orange lichen | Teloschistaceae
|
| CANO5 | Caloplaca novomexicana (Fink) | New Mexico orange lichen | Teloschistaceae
|
| CAOB10 | Caloplaca obliterans (Nyl.) Blomb. & Forss. | orange lichen | Teloschistaceae
|
| CAOB13 | Caloplaca oblongula (H. Magn.) Wetmore | orange lichen | Teloschistaceae
|
| CAOB14 | Caloplaca obscurella (Korber) Th. Fr. | orange lichen | Teloschistaceae
|
| CAOR17 | Caloplaca oregona H. Magn. | Oregon orange lichen | Teloschistaceae
|
| CAOR22 | Caloplaca oreicola (Steiner) v.d. Boom & Breuss | orange lichen | Teloschistaceae
|
| CAOX5 | Caloplaca oxfordensis Fink | Oxford orange lichen | Teloschistaceae
|
| CAPA77 | Caloplaca parvula Wetmore | orange lichen | Teloschistaceae
|
| CAPE28 | Caloplaca peliophylla (Tuck.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAPE29 | Caloplaca pelodella (Nyl.) Hasse | orange lichen | Teloschistaceae
|
| CAPH9 | Caloplaca phaeocarpella (Nyl.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAPI15 | Caloplaca pinicola H. Magn. | orange lichen | Teloschistaceae
|
| CAPO15 | Caloplaca pollinii (A. Massal.) Jatta | Pollin's orange lichen | Teloschistaceae
|
| CAPY8 | Caloplaca pyracea (Ach.) Th. Fr. | Caloplaca holocarpa | Teloschistaceae
|
| CAQU7 | Caloplaca quercicola H. Magn. | orange lichen | Teloschistaceae
|
| CARO29 | Caloplaca rosei Hasse | Rose's orange lichen | Teloschistaceae
|
| CARU17 | Caloplaca rubelliana (Ach.) Lojka | orange lichen | Teloschistaceae
|
| CARU18 | Caloplaca rubrofusca (de Lesd.) | orange lichen | Teloschistaceae
|
| CASA22 | Caloplaca sarcopisioides (Korber) Zahlbr. | Caloplaca obscurella | Teloschistaceae
|
| CASA23 | Caloplaca saxicola (Hoffm.) Nordin | orange lichen | Teloschistaceae
|
| CASA24 | Caloplaca saxifragarum Poelt | orange lichen | Teloschistaceae
|
| CASC24 | Caloplaca schaereri (Florke) Zahlbr. | Schaerer's orange lichen | Teloschistaceae
|
| CASC25 | Caloplaca scopularis (Nyl.) Lettau | orange lichen | Teloschistaceae
|
| CASI13 | Caloplaca sideritis (Tuck.) Zahlbr. | orange lichen | Teloschistaceae
|
| CASI14 | Caloplaca sinapisperma (Lam. & DC.) Maheu & A. Gillet | orange lichen | Teloschistaceae
|
| CASI15 | Caloplaca sipeana H. Magn. | orange lichen | Teloschistaceae
|
| CASO11 | Caloplaca sonorae Wetmore | orange lichen | Teloschistaceae
|
| CASO7 | Caloplaca sorediata (Vainio) Du Rietz | Xanthoria sorediata | Teloschistaceae
|
| CASO6 | Caloplaca sorocarpa (Vainio) Zahlbr. | orange lichen | Teloschistaceae
|
| CASP21 | Caloplaca spaldingii Zahlbr. | Spalding's orange lichen | Teloschistaceae
|
| CASP22 | Caloplaca spitsbergensis H. Magn. | Spitsberg orange lichen | Teloschistaceae
|
| CASP26 | Caloplaca splendens (Darbish.) Zahlbr. | Xanthoria elegans var. splendens | Teloschistaceae
|
| CASQ3 | Caloplaca squamosa (de Lesd.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAST43 | Caloplaca stanfordensis H. Magn. | Stanford orange lichen | Teloschistaceae
|
| CAST54 | Caloplaca stantonii W. A. Weber ex Arup | orange lichen | Teloschistaceae
|
| CAST45 | Caloplaca stillicidiorum (Vahl) Lynge | Caloplaca cerina | Teloschistaceae
|
| CASU50 | Caloplaca submexicana (de Lesd.) Zahlbr. | Candelina submexicana | Candelariaceae
|
| CASU31 | Caloplaca subnigricans H. Magn. | Caloplaca atrosanguinea | Teloschistaceae
|
| CASU38 | Caloplaca subnitida (Malme) Zahlbr. | orange lichen | Teloschistaceae
|
| CASU51 | Caloplaca subolivacea (Th. Fr.) Lynge | Caloplaca tiroliensis | Teloschistaceae
|
| CASU39 | Caloplaca subpyraceella (Nyl.) Zahlbr. | orange lichen | Teloschistaceae
|
| CATE60 | Caloplaca tetraspora (Nyl.) H. Olivier | orange lichen | Teloschistaceae
|
| CATI4 | Caloplaca tiroliensis Zahlbr. | orange lichen | Teloschistaceae
|
| CATO18 | Caloplaca tominii Savicz | Tolmin's orange lichen | Teloschistaceae
|
| CATO19 | Caloplaca tornoensis H. Magn. | orange lichen | Teloschistaceae
|
| CATR22 | Caloplaca trachyphylla (Tuck.) Zahlbr. | orange lichen | Teloschistaceae
|
| CAUL4 | Caloplaca ulmorum (Fink) Fink | orange lichen | Teloschistaceae
|
| CAUR2 | Caloplaca urceolata de Lesd. | orange lichen | Teloschistaceae
|
| CAVA8 | Caloplaca variabilis (Pers.) Mull. Arg. | variable orange lichen | Teloschistaceae
|
| CAVE16 | Caloplaca velana (A. Massal.) Du Rietz | orange lichen | Teloschistaceae
|
| CAVE17 | Caloplaca verrucosa Hasse | orange lichen | Teloschistaceae
|
| CAVE18 | Caloplaca verruculifera (Vainio) Zahlbr. | orange lichen | Teloschistaceae
|
| CAVI17 | Caloplaca vicaria H. Magn. | orange lichen | Teloschistaceae
|
| CAVI18 | Caloplaca vitellinula (Nyl.) H. Olivier | orange lichen | Teloschistaceae
|
| CAWE3 | Caloplaca wetmorei Nimis, Poelt & Tretiach | orange lichen | Teloschistaceae
|
| CAWR3 | Caloplaca wrightii (Willey) Fink | Wright's orange lichen | Teloschistaceae
|
| CAXA3 | Caloplaca xanthostigmoidea (Rasanen) Zahlbr. | orange lichen | Teloschistaceae
|
| CALOP7 | Caloplaca Th. Fr. | orange lichen | Teloschistaceae
|
| CASU52 | Caloplacopsis submexicana (de Lesd.) de Lesd. | Candelina submexicana | Candelariaceae
|
| CABA | Calopogon barbatus (Walt.) Ames | bearded grasspink | Orchidaceae
|
| CAMU10 | Calopogon multiflorus Lindl. | manyflower grasspink | Orchidaceae
|
| CAOK2 | Calopogon oklahomensis D.H. Goldman | Oklahoma grasspink | Orchidaceae
|
| CAPA4 | Calopogon pallidus Chapman | pale grasspink | Orchidaceae
|
| CAPUL3 | Calopogon pulchellus R. Br. ex Ait. f. var. latifolius (St. John) Fern. | Calopogon tuberosus var. tuberosus | Orchidaceae
|
| CAPU23 | Calopogon pulchellus R. Br. ex Ait. f. | Calopogon tuberosus var. tuberosus | Orchidaceae
|
| CATUL | Calopogon tuberosus (L.) B.S.P. var. latifolius (St. John) Boivin | Calopogon tuberosus var. tuberosus | Orchidaceae
|
| CATUS | Calopogon tuberosus (L.) B.S.P. var. simpsonii (Chapman) Magrath | Simpson's grasspink | Orchidaceae
|
| CATUT | Calopogon tuberosus (L.) B.S.P. var. tuberosus | tuberous grasspink | Orchidaceae
|
| CATU5 | Calopogon tuberosus (L.) B.S.P. | tuberous grasspink | Orchidaceae
|
| CALOP2 | Calopogon R. Br. ex Ait. f. | grasspink | Orchidaceae
|
| CACA42 | Calopogonium caeruleum (Benth.) Suav. | jicama | Fabaceae
|
| CAMU11 | Calopogonium mucunoides Desv. | calopo | Fabaceae
|
| CAOR11 | Calopogonium orthocarpum Urban | Calopogonium mucunoides | Fabaceae
|
| CALOP3 | Calopogonium Desv. | calopogonium | Fabaceae
|
| CAQU10 | Calothamnus quadrifidus R.Br. | common netbush | Myrtaceae
|
| CALOT3 | Calothamnus Labill | netbush | Myrtaceae
|
| CACU22 | Calotis cuneifolia R. Br. | wedgeleaf | Asteraceae
|
| CALOT2 | Calotis R. Br. | calotis | Asteraceae
|
| CAGI11 | Calotropis gigantea (L.) Ait. f. | giant milkweed | Asclepiadaceae
|
| CAPR | Calotropis procera (Ait.) Ait. f. | roostertree | Asclepiadaceae
|
| CALOT | Calotropis R. Br. | calotropis | Asclepiadaceae
|
| CAST34 | Calpidisca standleyae Barnh. | Utricularia amethystina | Lentibulariaceae
|
| CAAR25 | Caltha arctica R. Br. | Caltha palustris var. radicans | Ranunculaceae
|
| CAAS7 | Caltha asarifolia DC. | Caltha palustris var. palustris | Ranunculaceae
|
| CABIH3 | Caltha biflora DC. ssp. howellii (Huth) Abrams | Caltha leptosepala ssp. howellii | Ranunculaceae
|
| CABIR | Caltha biflora DC. var. rotundifolia (Huth) C.L. Hitchc. | Caltha leptosepala ssp. leptosepala var. leptosepala | Ranunculaceae
|
| CABI2 | Caltha biflora DC. | Caltha leptosepala ssp. howellii | Ranunculaceae
|
| CACH22 | Caltha chelidonii Greene | Caltha leptosepala ssp. leptosepala var. leptosepala | Ranunculaceae
|
| CAHO17 | Caltha howellii Huth | Caltha leptosepala ssp. howellii | Ranunculaceae
|
| CALEB2 | Caltha leptosepala DC. ssp. biflora (DC.) P.G. Sm. | Caltha leptosepala ssp. howellii | Ranunculaceae
|
| CALEH2 | Caltha leptosepala DC. ssp. howellii (Huth) P.G. Sm. | Howell's marsh marigold | Ranunculaceae
|
| CALEL8 | Caltha leptosepala DC. ssp. leptosepala var. leptosepala | white marsh marigold | Ranunculaceae
|