| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CLSU3 | Clermontia subpetiolata St. John | Clermontia grandiflora ssp. munroi | Campanulaceae
|
| CLTUS | Clermontia tuberculata Forbes var. subtuberculata St. John | Clermontia tuberculata | Campanulaceae
|
| CLTU2 | Clermontia tuberculata Forbes | Haleakala clermontia | Campanulaceae
|
| CLWA | Clermontia wailauensis St. John | Clermontia grandiflora ssp. munroi | Campanulaceae
|
| CLWAL | Clermontia waimeae Rock var. longisepala Rock | Clermontia waimeae | Campanulaceae
|
| CLWAO | Clermontia waimeae Rock var. obovata Rock | Clermontia waimeae | Campanulaceae
|
| CLWA2 | Clermontia waimeae Rock | swampforest clermontia | Campanulaceae
|
| CLERM | Clermontia Gaud. | clermontia | Campanulaceae
|
| CLAC2 | Clerodendrum aculeatum (L.) Schlecht. | haggarbush | Verbenaceae
|
| CLBU | Clerodendrum bungei Steud. | rose glorybower | Verbenaceae
|
| CLCH4 | Clerodendrum chinense (Osb.) Mabberley | stickbush | Verbenaceae
|
| CLFO3 | Clerodendrum foetidum Bunge | Clerodendrum bungei | Verbenaceae
|
| CLFRM | Clerodendrum fragrans (Vent.) Willd. var. multiplex (Sweet) Moldenke | Clerodendrum chinense | Verbenaceae
|
| CLFR4 | Clerodendrum fragrans (Vent.) Willd. | Clerodendrum chinense | Verbenaceae
|
| CLGL2 | Clerodendrum glabrum E. Mey. | Natal glorybower | Verbenaceae
|
| CLIN | Clerodendrum indicum (L.) Kuntze | turk's turbin | Verbenaceae
|
| CLIN2 | Clerodendrum inerme (L.) Gaertn. | embrert | Verbenaceae
|
| CLJA3 | Clerodendrum japonicum (Thunb.) Sweet | Japanese glorybower | Verbenaceae
|
| CLKA2 | Clerodendrum kaempferi (Jacq.) Sieb. | Kaempfer's glorybower | Verbenaceae
|
| CLLIP | Clerodendrum lindleyi Dcne. var. paniculatum Moldenke | Lindley's clerodendrum | Verbenaceae
|
| CLLI6 | Clerodendrum lindleyi Dcne. | Lindley's clerodendrum | Verbenaceae
|
| CLMA24 | Clerodendrum macrostegium Schauer | velvetleaf glorybower | Verbenaceae
|
| CLPH | Clerodendrum philippinum Schauer | Clerodendrum chinense | Verbenaceae
|
| CLSP7 | Clerodendrum speciosissimum Van Geert ex Morr. | Javanese glorybower | Verbenaceae
|
| CLSP13 | Clerodendrum �speciosum Dombrain | | Verbenaceae
|
| CLSQ3 | Clerodendrum squamatum Vahl | Clerodendrum japonicum | Verbenaceae
|
| CLTH | Clerodendrum thompsoniae Balf. f. | bagflower | Verbenaceae
|
| CLTRF | Clerodendrum trichotomum Thunb. var. ferrugineum Nakai | ferruginous clerodendrum | Verbenaceae
|
| CLTR | Clerodendrum trichotomum Thunb. | harlequin glorybower | Verbenaceae
|
| CLUM5 | Clerodendrum umbellatum Poir. | umbel clerodendrum | Verbenaceae
|
| CLWA3 | Clerodendrum wallichii Merr. | Wallich's glorybower | Verbenaceae
|
| CLERO2 | Clerodendrum L. | glorybower | Verbenaceae
|
| CLAC3 | Clethra acuminata Michx. | mountain sweetpepperbush | Clethraceae
|
| CLALT | Clethra alnifolia L. var. tomentosa (Lam.) Michx. | Clethra alnifolia | Clethraceae
|
| CLAL3 | Clethra alnifolia L. | coastal sweetpepperbush | Clethraceae
|
| CLTO | Clethra tomentosa Lam. | Clethra alnifolia | Clethraceae
|
| CLETH | Clethra L. | sweetpepperbush | Clethraceae
|
| CLAL4 | Cleyera albopunctata (Griseb.) Krug & Urban | teta prieta | Theaceae
|
| CLJA6 | Cleyera japonica Thunb. | sakaki | Theaceae
|
| CLEYE | Cleyera Thunb. | cleyera | Theaceae
|
| CLPU6 | Clianthus puniceus (G. Don) Sol. Ex Lindl. | glory-pea | Fabaceae
|
| CLIAN | Clianthus Sol. ex Lindl. | glory pea | Fabaceae
|
| CLER | Clibadium erosum (Sw.) DC. | jackass breadnut | Asteraceae
|
| CLIBA | Clibadium L. | clibadium | Asteraceae
|
| CLAN7 | Clidemia angustilamia Judd & Skean | narrowleaf terciopelo | Melastomataceae
|
| CLCY5 | Clidemia cymosa (Wendl. ex Spreng.) Alain | | Melastomataceae
|
| CLDO | Clidemia domingensis (DC.) Cogn. | Sagraea domingensis | Melastomataceae
|
| CLHIH2 | Clidemia hirta (L.) D. Don var. hirta | soapbush | Melastomataceae
|
| CLHI3 | Clidemia hirta (L.) D. Don | soapbush | Melastomataceae
|
| CLLA6 | Clidemia lanata DC. | Miconia lanata | Melastomataceae
|
| CLPO3 | Clidemia portoricensis Alain | Sagraea portoricensis | Melastomataceae
|
| CLPU3 | Clidemia pusilliflora auct. non Cogn. | Sagraea portoricensis | Melastomataceae
|
| CLST2 | Clidemia strigillosa (Sw.) DC. | thicket hogwood | Melastomataceae
|
| CLUM3 | Clidemia umbrosa (Sw.) Cogn. | Sagraea umbrosa | Melastomataceae
|
| CLIDE | Clidemia D. Don | clidemia | Melastomataceae
|
| CLMO2 | Cliftonia monophylla (Lam.) Britt. ex Sarg. | buckwheat tree | Cyrillaceae
|
| CLIFT | Cliftonia Banks ex Gaertn. f. | cliftonia | Cyrillaceae
|
| CLAMK | Climacium americanum Brid. var. kindbergii Ren. & Card. | Climacium kindbergii | Climaciaceae
|
| CLAM3 | Climacium americanum Brid. | American climacium moss | Climaciaceae
|
| CLDE70 | Climacium dendroides (Hedw.) Web. & Mohr | tree climacium moss | Climaciaceae
|
| CLKI | Climacium kindbergii (Ren. & Card.) Grout | Kindberg's climacium moss | Climaciaceae
|
| CLIMA2 | Climacium Web. & Mohr ex Mohr | climacium moss | Climaciaceae
|
| CLAC5 | Clinopodium acinos (L.) Kuntze | Acinos arvensis | Lamiaceae
|
| CLAR5 | Clinopodium arkansanum (Nutt.) House | limestone calamint | Lamiaceae
|
| CLAS2 | Clinopodium ashei (Weatherby) Small | Ashe's calamint | Lamiaceae
|
| CLBR7 | Clinopodium brownei (Sw.) Kuntze | Browne's savory | Lamiaceae
|
| CLCH5 | Clinopodium chandleri (Brandeg.) Cantino & S.J. Wagstaff | San Miguel calamint | Lamiaceae
|
| CLCO10 | Clinopodium coccineum (Nutt. ex Hook.) Kuntze | scarlet calamint | Lamiaceae
|
| CLDE4 | Clinopodium dentatum (Chapman) Kuntze | Florida calamint | Lamiaceae
|
| CLDO2 | Clinopodium douglasii (Benth.) Kuntze | yerba buena | Lamiaceae
|
| CLGE | Clinopodium georgianum Harper | Georgia calamint | Lamiaceae
|
| CLGL4 | Clinopodium glabellum (Michx.) Kuntze | Ozark calamint | Lamiaceae
|
| CLGL3 | Clinopodium glabrum (Nutt.) Kuntze | Clinopodium arkansanum | Lamiaceae
|
| CLGR4 | Clinopodium gracile (Benth.) Kuntze | slender wild basil | Lamiaceae
|
| CLMA9 | Clinopodium macrocalyx Small | Clinopodium coccineum | Lamiaceae
|
| CLMI9 | Clinopodium mimuloides (Benth.) Kuntze | monkeyflower savory | Lamiaceae
|
| CLNE3 | Clinopodium nepeta (L.) Kuntze | Calamintha nepeta ssp. nepeta | Lamiaceae
|
| CLVUN | Clinopodium vulgare L. var. neogaea (Fern.) C.F. Reed | Clinopodium vulgare | Lamiaceae
|
| CLVU | Clinopodium vulgare L. | wild basil | Lamiaceae
|
| CLINO | Clinopodium L. | clinopodium | Lamiaceae
|
| CLAL5 | Clintonia alleghaniensis Harned | Clintonia umbellulata | Liliaceae
|
| CLAN2 | Clintonia andrewsiana Torr. | Andrew's clintonia | Liliaceae
|
| CLBO3 | Clintonia borealis (Ait.) Raf. | bluebead | Liliaceae
|
| CLUM2 | Clintonia umbellulata (Michx.) Morong | white clintonia | Liliaceae
|
| CLUN2 | Clintonia uniflora (Menzies ex J.A. & J.H. Schultes) Kunth | bride's bonnet | Liliaceae
|
| CLINT | Clintonia Raf. | bluebead | Liliaceae
|
| CLCO21 | Cliostomum corrugatum (Ach.:Fr.) Fr. | | Bacidiaceae
|
| CLGR8 | Cliostomum graniforme (K. Hagen) Coppins | Cliostomum corrugatum | Bacidiaceae
|
| CLGR9 | Cliostomum griffithii (Sm.) Coppins | | Bacidiaceae
|
| CLLE9 | Cliostomum leprosum (Rasanen) Holien & Tonsberg | | Bacidiaceae
|
| CLLU4 | Cliostomum luteolum Gowan | Cliostomum leprosum | Bacidiaceae
|
| CLVI13 | Cliostomum vitellinum Gowan | | Bacidiaceae
|
| CLIOS | Cliostomum Fr. | cliostomum | Bacidiaceae
|
| CLBR3 | Clistoyucca brevifolia (Engelm.) Rydb. | Yucca brevifolia var. brevifolia | Agavaceae
|
| CLFA2 | Clitoria falcata Lam. | sickle pigeonwings | Fabaceae
|
| CLFR2 | Clitoria fragrans Small | sweetscented pigeonwings | Fabaceae
|
| CLLA4 | Clitoria laurifolia Poir. | laurel-leaf pigeonwings | Fabaceae
|
| CLMA4 | Clitoria mariana L. | Atlantic pigeonwings | Fabaceae
|
| CLPI5 | Clitoria pinnata (Pers.) R.H. Sm. | Barbieria pinnata | Fabaceae
|
| CLPO2 | Clitoria polyphylla Poir. | Barbieria pinnata | Fabaceae
|
| CLRU4 | Clitoria rubiginosa Juss. ex Pers. | Clitoria falcata | Fabaceae
|