| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CASI4 | Cassia siamea Lam. | Senna siamea | Fabaceae
|
| CASI18 | Cassia singueana Delile | Senna singueana | Fabaceae
|
| CASO81 | Cassia sophera L. | Senna sophera | Fabaceae
|
| CASP12 | Cassia spectabilis DC. | Senna spectabilis | Fabaceae
|
| CAST19 | Cassia stahlii Urban | Senna pendula var. stahlii | Fabaceae
|
| CAST47 | Cassia sturtii R. Br. | Sturt's cassia | Fabaceae
|
| CASU27 | Cassia suffruticosa Koenig ex Roth | Senna surattensis | Fabaceae
|
| CASU25 | Cassia sulfurea DC. ex Colladon | Senna sulfurea | Fabaceae
|
| CASUS | Cassia surattensis Burm. f. var. suffruticosa (Koenig ex Roth) Chatterjee | Senna surattensis | Fabaceae
|
| CASU62 | Cassia surattensis Burm. f. | Senna surattensis | Fabaceae
|
| CATE10 | Cassia texana Buckl. | Chamaecrista flexuosa var. texana | Fabaceae
|
| CATO11 | Cassia tomentosa Wallich ex Arn. | Senna hirsuta var. hirsuta | Fabaceae
|
| CATO15 | Cassia tora L. | Senna tora | Fabaceae
|
| CATO81 | Cassia tora auct. non L. | Senna obtusifolia | Fabaceae
|
| CAUN80 | Cassia uniflora P. Mill. | Senna uniflora | Fabaceae
|
| CAWI4 | Cassia wislizeni Gray | Senna wislizeni | Fabaceae
|
| CAWR2 | Cassia wrightii Gray | Chamaecrista serpens var. wrightii | Fabaceae
|
| CASSI | Cassia L. | cassia | Fabaceae
|
| CAXYA | Cassine xylocarpa Vent. var. attenuata (A. Rich.) Kuntze | Cassine xylocarpa | Celastraceae
|
| CAXYC | Cassine xylocarpa Vent. var. caribaea Urban | Cassine xylocarpa | Celastraceae
|
| CAXY | Cassine xylocarpa Vent. | marbletree | Celastraceae
|
| CASSI2 | Cassine L. | cassine | Celastraceae
|
| CAHY7 | Cassiope hypnoides (L.) D. Don | Harrimanella hypnoides | Ericaceae
|
| CALYC7 | Cassiope lycopodioides (Pallas) D. Don ssp. cristapilosa Calder & Taylor | Cassiope lycopodioides var. cristapilosa | Ericaceae
|
| CALYC6 | Cassiope lycopodioides (Pallas) D. Don var. cristapilosa (Calder & Taylor) Boivin | clubmoss mountain heather | Ericaceae
|
| CALYL2 | Cassiope lycopodioides (Pallas) D. Don var. lycopodioides | clubmoss mountain heather | Ericaceae
|
| CALY4 | Cassiope lycopodioides (Pallas) D. Don | clubmoss mountain heather | Ericaceae
|
| CAMEG | Cassiope mertensiana (Bong.) D. Don var. gracilis (Piper) C.L. Hitchc. | western moss heather | Ericaceae
|
| CAMEM | Cassiope mertensiana (Bong.) D. Don var. mertensiana | western moss heather | Ericaceae
|
| CAME7 | Cassiope mertensiana (Bong.) D. Don | western moss heather | Ericaceae
|
| CAST33 | Cassiope stelleriana (Pallas) DC. | Harrimanella stelleriana | Ericaceae
|
| CATES3 | Cassiope tetragona (L.) D. Don ssp. saximontana (Small) Porsild | Cassiope tetragona var. saximontana | Ericaceae
|
| CATES2 | Cassiope tetragona (L.) D. Don var. saximontana (Small) C.L. Hitchc. | white arctic mountain heather | Ericaceae
|
| CATET | Cassiope tetragona (L.) D. Don var. tetragona | white arctic mountain heather | Ericaceae
|
| CATE11 | Cassiope tetragona (L.) D. Don | white arctic mountain heather | Ericaceae
|
| CASSI3 | Cassiope D. Don | mountain heather | Ericaceae
|
| CAAL15 | Cassipourea alba Griseb. | Cassipourea guianensis | Rhizophoraceae
|
| CAGU3 | Cassipourea guianensis Aubl. | goatwood | Rhizophoraceae
|
| CASSI4 | Cassipourea Aubl. | cassipourea | Rhizophoraceae
|
| CABA19 | Cassytha baccifera Soland. ex J. Mill. | Rhipsalis baccifera | Cactaceae
|
| CAFI4 | Cassytha filiformis L. | devil's gut | Lauraceae
|
| CASSY | Cassytha L. | cassytha | Lauraceae
|
| CAAM23 | Castalia amazonum (Mart. & Zucc.) Britt. & Wilson | Nymphaea amazonum | Nymphaeaceae
|
| CAAM22 | Castalia ampla Salisb. | Nymphaea ampla var. ampla | Nymphaeaceae
|
| CAEL13 | Castalia elegans (Hook.) Greene | Nymphaea elegans | Nymphaeaceae
|
| CAFL28 | Castalia flava (Leitner) Greene | Nymphaea mexicana | Nymphaeaceae
|
| CAJA8 | Castalia jamesoniana (Planch.) Britt. & Wilson | Nymphaea jamesoniana | Nymphaeaceae
|
| CALE34 | Castalia lekophylla Small | Nymphaea odorata ssp. odorata | Nymphaeaceae
|
| CAMI34 | Castalia minor (Sims) Nyar | Nymphaea odorata ssp. odorata | Nymphaeaceae
|
| CAOD4 | Castalia odorata (Ait.) Wood | Nymphaea odorata ssp. odorata | Nymphaeaceae
|
| CAPU25 | Castalia pulchella (DC.) Britt. | Nymphaea ampla var. pulchella | Nymphaeaceae
|
| CARE15 | Castalia reniformis DC. | Nymphaea odorata ssp. odorata | Nymphaeaceae
|
| CARU14 | Castalia rudgeana (G.F.W. Mey.) Britt. & Wilson | Nymphaea rudgeana | Nymphaeaceae
|
| CATE17 | Castalia tetragona (Georgi) Lawson | Nymphaea tetragona | Nymphaeaceae
|
| CATU7 | Castalia tuberosa (Paine) Greene | Nymphaea odorata ssp. tuberosa | Nymphaeaceae
|
| CATR18 | Castalis tragus (Ait.) Norl. | cape marigold | Asteraceae
|
| CASTA4 | Castalis Cass. | castalis | Asteraceae
|
| CAAL9 | Castanea alabamensis Ashe | Castanea pumila var. ozarkensis | Fagaceae
|
| CAALF | Castanea alnifolia Nutt. var. floridana Sarg. | Castanea pumila var. pumila | Fagaceae
|
| CAAL10 | Castanea alnifolia Nutt. | Castanea pumila var. pumila | Fagaceae
|
| CAAM29 | Castanea americana (Michaux) Raf. | Castanea dentata | Fagaceae
|
| CAAS4 | Castanea ashei (Sudworth) Sudworth | Castanea pumila var. pumila | Fagaceae
|
| CABU11 | Castanea bungeana Blume | Castanea mollissima | Fagaceae
|
| CACR27 | Castanea crenata Sieb. & Zucc. | Japanese chestnut | Fagaceae
|
| CADE12 | Castanea dentata (Marsh.) Borkh. | American chestnut | Fagaceae
|
| CAFL25 | Castanea floridana (Sarg.) Ashe | Castanea pumila var. pumila | Fagaceae
|
| CAFO9 | Castanea formosana (Hayata) Hayata | Castanea mollissima | Fagaceae
|
| CAJA10 | Castanea japonica Blume | Castanea crenata | Fagaceae
|
| CAMO83 | Castanea mollissima Blume | Chinese chestnut | Fagaceae
|
| CANE7 | Castanea �neglecta Dode (pro sp.) | | Fagaceae
|
| CAOZA | Castanea ozarkensis Ashe var. arkansana (Ashe) Ashe | Castanea pumila var. ozarkensis | Fagaceae
|
| CAOZ | Castanea ozarkensis Ashe | Castanea pumila var. ozarkensis | Fagaceae
|
| CAPU41 | Castanea pubinervis (Hassk.) C. Schneider | Castanea crenata | Fagaceae
|
| CAPUA | Castanea pumila (L.) P. Mill. var. ashei Sudworth | Castanea pumila var. pumila | Fagaceae
|
| CAPUM3 | Castanea pumila (L.) P. Mill. var. margarettiae Ashe | Castanea pumila var. pumila | Fagaceae
|
| CAPUO | Castanea pumila (L.) P. Mill. var. ozarkensis (Ashe) Tucker | Ozark chinkapin | Fagaceae
|
| CAPUP3 | Castanea pumila (L.) P. Mill. var. pumila | chinkapin | Fagaceae
|
| CAPU9 | Castanea pumila (L.) P. Mill. | chinkapin | Fagaceae
|
| CASA27 | Castanea sativa P. Mill. | European chestnut | Fagaceae
|
| CAST48 | Castanea stricta Siebold & Zucc. | Castanea crenata | Fagaceae
|
| CAVE21 | Castanea vesca Gaertner | Castanea sativa | Fagaceae
|
| CAVU5 | Castanea vulgaris Lam. | Castanea sativa | Fagaceae
|
| CASTA | Castanea P. Mill. | chestnut | Fagaceae
|
| CACHM | Castanopsis chrysophylla (Dougl. ex Hook.) A. DC. var. minor (Benth.) A. DC. | Chrysolepis chrysophylla var. minor | Fagaceae
|
| CACH6 | Castanopsis chrysophylla (Dougl. ex Hook.) A. DC. | Chrysolepis chrysophylla var. chrysophylla | Fagaceae
|
| CASE8 | Castanopsis sempervirens (Kellogg) Dudley ex Merriam | Chrysolepis sempervirens | Fagaceae
|
| CAEM4 | Castela emoryi (Gray) Moran & Felger | crucifixion thorn | Simaroubaceae
|
| CAERE2 | Castela erecta Turp. ssp. erecta | goatbush | Simaroubaceae
|
| CAERT | Castela erecta Turp. ssp. texana (Torr. & Gray) Cronq. | Texan goatbush | Simaroubaceae
|
| CAER3 | Castela erecta Turp. | goatbush | Simaroubaceae
|
| CAST30 | Castela stewartii (C.H. Muell.) Moran & Felger | Holacantha stewartii | Simaroubaceae
|
| CATE13 | Castela texana (Torr. & Gray) Rose | Castela erecta ssp. texana | Simaroubaceae
|
| CATO16 | Castela tortuosa Liebm. | Castela erecta ssp. texana | Simaroubaceae
|
| CASTE2 | Castela Turp. | castela | Simaroubaceae
|
| CANI11 | Castelaria nicholsonii (Hook.) Small | Castela erecta ssp. erecta | Simaroubaceae
|
| CAELC | Castilla elastica Sesse ssp. costaricana (Liebm.) C. C. Berg | castilla | Moraceae
|
| CAELE2 | Castilla elastica Sesse ssp. elastica | castilloa rubber | Moraceae
|
| CAEL5 | Castilla elastica Sess� | Panama rubbertree | Moraceae
|
| CAPA66 | Castilla panamensis O. F. Cook | Castilla elastica ssp. costaricana | Moraceae
|
| CAUL5 | Castilla ulei Warb. | caucho rubber | Moraceae
|
| CASTI | Castilla Cerv. | castilla | Moraceae
|