| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CAINI4 | Callirhoe involucrata (Torr. & Gray) Gray var. involucrata | purple poppymallow | Malvaceae
|
| CAINL | Callirhoe involucrata (Torr. & Gray) Gray var. lineariloba (Torr. & Gray) Gray | purple poppymallow | Malvaceae
|
| CAINN2 | Callirhoe involucrata (Torr. & Gray) Gray var. novomexicana E.G. Baker | Callirhoe involucrata var. involucrata | Malvaceae
|
| CAIN2 | Callirhoe involucrata (Torr. & Gray) Gray | purple poppymallow | Malvaceae
|
| CALE2 | Callirhoe leiocarpa R.F. Martin | tall poppymallow | Malvaceae
|
| CAPAB4 | Callirhoe papaver (Cav.) Gray var. bushii (Fern.) Waterfall | Callirhoe bushii | Malvaceae
|
| CAPA2 | Callirhoe papaver (Cav.) Gray | woodland poppymallow | Malvaceae
|
| CAPE23 | Callirhoe pedata (Nutt. ex Hook.) Gray | palmleaf poppymallow | Malvaceae
|
| CAPE25 | Callirhoe pedata auct. non (Nutt. ex Hook.) Gray | Callirhoe leiocarpa | Malvaceae
|
| CASC4 | Callirhoe scabriuscula B.L. Robins. | Texas poppymallow | Malvaceae
|
| CATR | Callirhoe triangulata (Leavenworth) Gray | clustered poppymallow | Malvaceae
|
| CALLI3 | Callirhoe Nutt. | poppymallow | Malvaceae
|
| CACO19 | Callisia cordifolia (Sw.) E.S. Anderson & Woods. | Florida roseling | Commelinaceae
|
| CAFR6 | Callisia fragrans (Lindl.) Woods. | basketplant | Commelinaceae
|
| CAGR25 | Callisia graminea (Small) G. Tucker | grassleaf roseling | Commelinaceae
|
| CAGR23 | Callisia graminifolia (Raf.) D.R. Hunt | Callisia rosea | Commelinaceae
|
| CAMI25 | Callisia micrantha (Torr.) D.R. Hunt | littleflower roseling | Commelinaceae
|
| CAMO25 | Callisia monandra (Sw.) J.A. & J.H. Schultes | cojite morado | Commelinaceae
|
| CAOR10 | Callisia ornata (Small) G. Tucker | Florida scrub roseling | Commelinaceae
|
| CARE8 | Callisia repens (Jacq.) L. | creeping inchplant | Commelinaceae
|
| CARO18 | Callisia rosea (Vent.) D.R. Hunt | Piedmont roseling | Commelinaceae
|
| CALLI4 | Callisia Loefl. | roseling | Commelinaceae
|
| CACI15 | Callistemon citrinus (Curtis) Stapf | crimson bottlebrush | Myrtaceae
|
| CALA70 | Callistemon lanceolatus (Sw.) DC. | Callistemon citrinus | Myrtaceae
|
| CAPA72 | Callistemon pallidus (Bonpl.) DC. | lemon bottlebrush | Myrtaceae
|
| CAPH10 | Callistemon phoeniceus Lindley | bottlebrush | Myrtaceae
|
| CARI9 | Callistemon rigidus R. Br. | bottlebrush | Myrtaceae
|
| CASP30 | Callistemon speciosus (Bonpl.) Sweet | gray bottlebrush | Myrtaceae
|
| CALLI12 | Callistemon R. Br. | bottlebrush | Myrtaceae
|
| CACH25 | Callistephus chinensis (L.) Nees | China aster | Asteraceae
|
| CALLI8 | Callistephus Cass. | callistephus | Asteraceae
|
| CAAR28 | Callisteris arizonica Greene | Ipomopsis arizonica | Polemoniaceae
|
| CABA26 | Callistopteris baldwinii (D.C. Eat.) Copeland | Trichomanes bauerianum | Hymenophyllaceae
|
| CAAN | Callitriche anceps Fern. | Callitriche heterophylla ssp. heterophylla | Callitrichaceae
|
| CAAU16 | Callitriche austinii Engelm. | Callitriche terrestris | Callitrichaceae
|
| CAAU15 | Callitriche autumnalis L. | Callitriche hermaphroditica | Callitrichaceae
|
| CABO10 | Callitriche bolanderi Hegelm. | Callitriche heterophylla ssp. bolanderi | Callitrichaceae
|
| CADEA | Callitriche deflexa A. Braun var. austinii (Engelm.) Hegelm. | Callitriche terrestris | Callitrichaceae
|
| CADES2 | Callitriche deflexa A. Braun var. subsessilis Fassett | Callitriche terrestris | Callitrichaceae
|
| CADE4 | Callitriche deflexa A. Braun | Callitriche terrestris | Callitrichaceae
|
| CAFA3 | Callitriche fassettii Schotsman | Fassett's water-starwort | Callitrichaceae
|
| CAHE2 | Callitriche hermaphroditica L. | northern water-starwort | Callitrichaceae
|
| CAHEB3 | Callitriche heterophylla Pursh ssp. bolanderi (Hegelm.) Calder & Taylor | Bolander's water-starwort | Callitrichaceae
|
| CAHEH | Callitriche heterophylla Pursh ssp. heterophylla | twoheaded water-starwort | Callitrichaceae
|
| CAHEB2 | Callitriche heterophylla Pursh var. bolanderi (Hegelm.) Fassett | Callitriche heterophylla ssp. bolanderi | Callitrichaceae
|
| CAHE3 | Callitriche heterophylla Pursh | twoheaded water-starwort | Callitrichaceae
|
| CALO2 | Callitriche longipedunculata Morong | longstock water-starwort | Callitrichaceae
|
| CAMA3 | Callitriche marginata Torr. | winged water-starwort | Callitrichaceae
|
| CANU10 | Callitriche nuttallii Torr. | Callitriche pedunculosa | Callitrichaceae
|
| CAPAV2 | Callitriche palustris L. var. verna (L.) Fenley ex Jepson | Callitriche palustris | Callitrichaceae
|
| CAPA52 | Callitriche palustris L. | vernal water-starwort | Callitrichaceae
|
| CAPE44 | Callitriche pedunculosa Nutt. | Nuttall's water-starwort | Callitrichaceae
|
| CAPES | Callitriche peploides Nutt. var. semialata Fassett | Callitriche peploides | Callitrichaceae
|
| CAPE16 | Callitriche peploides Nutt. | matted water-starwort | Callitrichaceae
|
| CASE21 | Callitriche sepulta S. Wats. | Callitriche marginata | Callitrichaceae
|
| CAST | Callitriche stagnalis Scop. | pond water-starwort | Callitrichaceae
|
| CATE19 | Callitriche terrestris Raf. | terrestrial water-starwort | Callitrichaceae
|
| CATR2 | Callitriche trochlearis Fassett | effluent water-starwort | Callitrichaceae
|
| CAVE2 | Callitriche verna L. | Callitriche palustris | Callitrichaceae
|
| CALLI6 | Callitriche L. | water-starwort | Callitrichaceae
|
| CACO2 | Callitris columellaris auct. non F.J. Muell. | Callitris glaucophylla | Cupressaceae
|
| CAGL23 | Callitris glaucophylla J. Thompson & L. Johnson | white cypress-pine | Cupressaceae
|
| CAHU3 | Callitris hugelii auct. non (Carr.) Franco | Callitris glaucophylla | Cupressaceae
|
| CAOB15 | Callitris oblonga Rich. | Pigmy cypress-pine | Cupressaceae
|
| CALLI7 | Callitris Vent. | cypress-pine | Cupressaceae
|
| CAVU | Calluna vulgaris (L.) Hull | heather | Ericaceae
|
| CALLU | Calluna Salisb. | heather | Ericaceae
|
| CAMA49 | Calocarpum mammosum (L.) Pierre | Manilkara zapota | Sapotaceae
|
| CASA29 | Calocarpum sapota (Jacq.) Merr. | Pouteria sapota | Sapotaceae
|
| CAVI21 | Calocarpum viride Pittier | Pouteria viridis | Sapotaceae
|
| CADE27 | Calocedrus decurrens (Torr.) Florin | incense cedar | Cupressaceae
|
| CALOC2 | Calocedrus Kurz | incense cedar | Cupressaceae
|
| CAALR | Calochortus albus Dougl. ex Benth. var. rubellus Greene | Calochortus albus | Liliaceae
|
| CAAL2 | Calochortus albus Dougl. ex Benth. | white fairy-lantern | Liliaceae
|
| CAAM3 | Calochortus amabilis Purdy | Diogenes' lantern | Liliaceae
|
| CAAM4 | Calochortus ambiguus (M.E. Jones) Ownbey | doubting mariposa lily | Liliaceae
|
| CAAM5 | Calochortus amoenus Greene | purple fairy-lantern | Liliaceae
|
| CAAP | Calochortus apiculatus Baker | pointedtip mariposa lily | Liliaceae
|
| CAAR44 | Calochortus argillosus (Hoover) R. Zebell & P. Fiedler | clay mariposa lily | Liliaceae
|
| CAAU8 | Calochortus aureus S. Wats. | golden mariposa lily | Liliaceae
|
| CABR4 | Calochortus bruneaunis A. Nels. & J.F. Macbr. | Bruneau mariposa lily | Liliaceae
|
| CACAF2 | Calochortus caeruleus (Kellogg) S. Wats. var. fimbriatus Ownbey | Calochortus caeruleus | Liliaceae
|
| CACAM3 | Calochortus caeruleus (Kellogg) S. Wats. var. maweanus (Leichtl.) Jepson | Calochortus tolmiei | Liliaceae
|
| CACAN | Calochortus caeruleus (Kellogg) S. Wats. var. nanus (Wood) Ownbey | Calochortus elegans var. nanus | Liliaceae
|
| CACAW2 | Calochortus caeruleus (Kellogg) S. Wats. var. westonii (Eastw.) Ownbey | Calochortus westonii | Liliaceae
|
| CACA98 | Calochortus caeruleus (Kellogg) S. Wats. | beavertail grass | Liliaceae
|
| CACA5 | Calochortus catalinae S. Wats. | Santa Catalina mariposa lily | Liliaceae
|
| CACLP | Calochortus clavatus S. Wats. ssp. pallidus (Hoover) Munz | Calochortus clavatus var. pallidus | Liliaceae
|
| CACLR | Calochortus clavatus S. Wats. ssp. recurvifolius (Hoover) Munz | Calochortus clavatus var. recurvifolius | Liliaceae
|
| CACLA | Calochortus clavatus S. Wats. var. avius Jepson | clubhair mariposa lily | Liliaceae
|
| CACLC2 | Calochortus clavatus S. Wats. var. clavatus | clubhair mariposa lily | Liliaceae
|
| CACLG | Calochortus clavatus S. Wats. var. gracilis Ownbey | slender mariposa lily | Liliaceae
|
| CACLP4 | Calochortus clavatus S. Wats. var. pallidus (Hoover) R. Fiedler & P. Zebell | clubhair mariposa lily | Liliaceae
|
| CACLR3 | Calochortus clavatus S. Wats. var. recurvifolius (Hoover) R. Fiedler & P. Zebell | Arroyo de la Cruz mariposa lily | Liliaceae
|
| CACL | Calochortus clavatus S. Wats. | clubhair mariposa lily | Liliaceae
|
| CACOF | Calochortus coeruleus (Kellogg) S. Wats. var. fimbriatus Ownbey [orthographic variant] | Calochortus caeruleus | Liliaceae
|
| CACOM | Calochortus coeruleus (Kellogg) S. Wats. var. maweanus (Leichtl.) Jepson [orthographic variant] | Calochortus tolmiei | Liliaceae
|
| CACON | Calochortus coeruleus (Kellogg) S. Wats. var. nanus (Wood) Ownbey [orthographic variant] | Calochortus elegans var. nanus | Liliaceae
|
| CACOW | Calochortus coeruleus (Kellogg) S. Wats. var. westonii (Eastw.) Ownbey [orthographic variant] | Calochortus westonii | Liliaceae
|
| CACO3 | Calochortus coeruleus (Kellogg) S. Wats. [orthographic variant] | Calochortus caeruleus | Liliaceae
|
| CACO4 | Calochortus concolor (Baker) Purdy | goldenbowl mariposa lily | Liliaceae
|