| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CHBR10 | Chaenotheca brunneola (Ach.) Mull Arg. | needle lichen | Coniocybaceae
|
| CHCA32 | Chaenotheca carthusiae (Harm.) Lettau | Chaenotheca chlorella | Coniocybaceae
|
| CHCH13 | Chaenotheca chlorella (Ach.) Mull. Arg. | needle lichen | Coniocybaceae
|
| CHCH14 | Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. | needle lichen | Coniocybaceae
|
| CHCI4 | Chaenotheca cinerea (Pers.) Tibell | needle lichen | Coniocybaceae
|
| CHFE7 | Chaenotheca ferruginea (Turner & Borrer) Mig. | needle lichen | Coniocybaceae
|
| CHFL10 | Chaenotheca floridana R. C. Harris | needle lichen | Coniocybaceae
|
| CHFU3 | Chaenotheca furfuracea (L.) Tibell | needle lichen | Coniocybaceae
|
| CHGR19 | Chaenotheca gracilenta (Ach.) J.-E. Mattsson & Middelborg | Cybebe gracilenta | Coniocybaceae
|
| CHGR20 | Chaenotheca gracillima (Vainio) Tibell | needle lichen | Coniocybaceae
|
| CHHI11 | Chaenotheca hispidula (Ach.) Zahlbr. | hispid needle lichen | Coniocybaceae
|
| CHHY5 | Chaenotheca hygophila Tibell | Chaenotheca brunneola | Coniocybaceae
|
| CHLA22 | Chaenotheca laevigata Nadv. | needle lichen | Coniocybaceae
|
| CHME9 | Chaenotheca melanophaea (Ach.) Zwackh | Chaenotheca ferruginea | Coniocybaceae
|
| CHPH | Chaenotheca phaeocephala (Turner) Th. Fr. | needle lichen | Coniocybaceae
|
| CHSA7 | Chaenotheca savonica (Rasanen) Tibell | Chaenothecopsis savonica | Mycocaliciaceae
|
| CHSC8 | Chaenotheca schaereri (De Not.) Zahlbr. | Chaenotheca cinerea | Coniocybaceae
|
| CHST9 | Chaenotheca stemonea (Ach.) Mull. Arg. | needle lichen | Coniocybaceae
|
| CHSU14 | Chaenotheca subroscida (Eitner) Zahlbr. | needle lichen | Coniocybaceae
|
| CHSU18 | Chaenotheca sulphurea (Retz.) Middleborg & J.-E. Mattsson | Chaenotheca brachypoda | Coniocybaceae
|
| CHTRC2 | Chaenotheca trichialis (Ach.) Th. Fr. var. cinerea (Pers.) Blomb. & Forss. | Chaenotheca cinerea | Coniocybaceae
|
| CHTR12 | Chaenotheca trichialis (Ach.) Th. Fr. | needle lichen | Coniocybaceae
|
| CHXY | Chaenotheca xyloxena Nadv. | needle lichen | Coniocybaceae
|
| CHAEN4 | Chaenotheca Th. Fr. | needle lichen | Coniocybaceae
|
| CHBR11 | Chaenothecopsis brevipes Tibell | | Mycocaliciaceae
|
| CHCO23 | Chaenothecopsis consociata (Nadv.) A. F. W. Schmidt | | Mycocaliciaceae
|
| CHDE15 | Chaenothecopsis debilis (Turner & Borrer ex Sm.) Tibell | | Mycocaliciaceae
|
| CHEP | Chaenothecopsis epithallina Tibell | | Mycocaliciaceae
|
| CHLI10 | Chaenothecopsis lignicola (Nadv.) A. F. W. Schmidt | Chaenothecopsis pusiola | Mycocaliciaceae
|
| CHNA5 | Chaenothecopsis nana Tibell | | Mycocaliciaceae
|
| CHNO4 | Chaenothecopsis norstictica R. C. Harris | | Mycocaliciaceae
|
| CHPI10 | Chaenothecopsis pilosa Tibell & Kalb | | Mycocaliciaceae
|
| CHPU7 | Chaenothecopsis pusilla (Ach.) A. F. W. Schmidt | | Mycocaliciaceae
|
| CHPU8 | Chaenothecopsis pusiola (Ach.) Vainio | | Mycocaliciaceae
|
| CHRA7 | Chaenothecopsis rappii (Nadv.) R. C. Harris | | Mycocaliciaceae
|
| CHRU6 | Chaenothecopsis rubescens Vainio | | Mycocaliciaceae
|
| CHSA6 | Chaenothecopsis savonica (Rasanen) Tibell | | Mycocaliciaceae
|
| CHSU16 | Chaenothecopsis subpusilla (Vainio) Tibell | Chaenothecopsis pusilla | Mycocaliciaceae
|
| CHVI19 | Chaenothecopsis viridialba (Krempelh.) A. F. W. Schmidt | | Mycocaliciaceae
|
| CHVI20 | Chaenothecopsis viridireagens (Nadv.) A. F. W. Schmidt | | Mycocaliciaceae
|
| CHAEN5 | Chaenothecopsis Vainio | chaenothecopsis | Mycocaliciaceae
|
| CHDA3 | Chaerophyllum dasycarpum (Hook. ex S. Wats.) Nutt. ex Small | Chaerophyllum tainturieri var. dasycarpum | Apiaceae
|
| CHFL6 | Chaerophyllum floridanum (Coult. & Rose) Bush | Chaerophyllum tainturieri var. tainturieri | Apiaceae
|
| CHPRP | Chaerophyllum procumbens (L.) Crantz var. procumbens | spreading chervil | Apiaceae
|
| CHPRS | Chaerophyllum procumbens (L.) Crantz var. shortii Torr. & Gray | Short's spreading chervil | Apiaceae
|
| CHPRT | Chaerophyllum procumbens (L.) Crantz var. tainturieri (Hook.) Coult. & Rose | Chaerophyllum tainturieri var. tainturieri | Apiaceae
|
| CHPR | Chaerophyllum procumbens (L.) Crantz | spreading chervil | Apiaceae
|
| CHSH | Chaerophyllum shortii (Torr. & Gray) Bush | Chaerophyllum procumbens var. shortii | Apiaceae
|
| CHSY | Chaerophyllum sylvestre L. | Anthriscus sylvestris | Apiaceae
|
| CHTAD | Chaerophyllum tainturieri Hook. var. dasycarpum Hook. ex S. Wats. | hairyfruit chervil | Apiaceae
|
| CHTAF | Chaerophyllum tainturieri Hook. var. floridanum Coult. & Rose | Chaerophyllum tainturieri var. tainturieri | Apiaceae
|
| CHTAT | Chaerophyllum tainturieri Hook. var. tainturieri | hairyfruit chervil | Apiaceae
|
| CHTA | Chaerophyllum tainturieri Hook. | hairyfruit chervil | Apiaceae
|
| CHTE5 | Chaerophyllum temulum L. | rough chervil | Apiaceae
|
| CHTE7 | Chaerophyllum texanum Coult. & Rose | Chaerophyllum tainturieri var. tainturieri | Apiaceae
|
| CHAER | Chaerophyllum L. | chervil | Apiaceae
|
| CHWH | Chaetadelpha wheeleri Gray ex S. Wats. | Wheeler's skeletonweed | Asteraceae
|
| CHAET | Chaetadelpha Gray ex S. Wats. | skeletonweed | Asteraceae
|
| CHBA9 | Chaetochloa barbata (Lam.) A.S. Hitchc. & Chase | Setaria barbata | Poaceae
|
| CHCO20 | Chaetochloa corrugata (Ell.) Scribn. | Setaria corrugata | Poaceae
|
| CHGE4 | Chaetochloa geniculata (Lam.) Millsp. & Chase | Setaria parviflora | Poaceae
|
| CHGL12 | Chaetochloa glauca (L.) Scribn. | Pennisetum glaucum | Poaceae
|
| CHHI10 | Chaetochloa hispida Scribn. & Merr. | Setaria corrugata | Poaceae
|
| CHIM2 | Chaetochloa imberbis (Poir.) Scribn. | Setaria parviflora | Poaceae
|
| CHIT | Chaetochloa italica (L.) Scribn. | Setaria italica | Poaceae
|
| CHLE9 | Chaetochloa leucopila Scribn. & Merr. | Setaria leucopila | Poaceae
|
| CHLU3 | Chaetochloa lutescens (Weigel) Stuntz | Pennisetum glaucum | Poaceae
|
| CHMA8 | Chaetochloa macrosperma Scribn. & Merr. | Setaria macrosperma | Poaceae
|
| CHMA9 | Chaetochloa magna (Griseb.) Scribn. | Setaria magna | Poaceae
|
| CHNI5 | Chaetochloa nigrirostris (Nees) Skeels | Setaria nigrirostris | Poaceae
|
| CHRA5 | Chaetochloa rariflora (Mikan ex Trin.) A.S. Hitchc. & Chase | Setaria rariflora | Poaceae
|
| CHSE12 | Chaetochloa setosa (Sw.) Scribn. | Setaria setosa var. setosa | Poaceae
|
| CHTE9 | Chaetochloa tenacissima (Schrad.) A.S. Hitchc. & Chase | Setaria tenacissima | Poaceae
|
| CHVE7 | Chaetochloa verticillata (L.) Scribn. | Setaria verticillata | Poaceae
|
| CHVI12 | Chaetochloa villosissima Scribn. & Merr. | Setaria villosissima | Poaceae
|
| CHVI13 | Chaetochloa viridis (L.) Scribn. | Setaria viridis var. viridis | Poaceae
|
| CHVU2 | Chaetochloa vulpiseta (Lam.) A.S. Hitchc. & Chase | Setaria vulpiseta | Poaceae
|
| CHAL3 | Chaetopappa alsinoides (Greene) Keck | Pentachaeta alsinoides | Asteraceae
|
| CHASA | Chaetopappa asteroides Nutt. ex DC. var. asteroides | Arkansas leastdaisy | Asteraceae
|
| CHASG | Chaetopappa asteroides Nutt. ex DC. var. grandis Shinners | Arkansas leastdaisy | Asteraceae
|
| CHASI | Chaetopappa asteroides Nutt. ex DC. var. imberbis Gray | Chaetopappa imberbis | Asteraceae
|
| CHAS | Chaetopappa asteroides Nutt. ex DC. | Arkansas leastdaisy | Asteraceae
|
| CHAU | Chaetopappa aurea (Nutt.) Keck | Pentachaeta aurea | Asteraceae
|
| CHBE | Chaetopappa bellidiflora (Greene) Keck | Pentachaeta bellidiflora | Asteraceae
|
| CHBE2 | Chaetopappa bellidifolia (Gray & Engelm.) Shinners | whiteray leastdaisy | Asteraceae
|
| CHBEH | Chaetopappa bellioides (Gray) Shinners var. hirticaulis Shinners | Chaetopappa bellioides | Asteraceae
|
| CHBE3 | Chaetopappa bellioides (Gray) Shinners | manyflower leastdaisy | Asteraceae
|
| CHEF | Chaetopappa effusa (Gray) Shinners | spreading leastdaisy | Asteraceae
|
| CHEL2 | Chaetopappa elegans Soreng & Spellenberg | Ionactis elegans | Asteraceae
|
| CHER2 | Chaetopappa ericoides (Torr.) Nesom | rose heath | Asteraceae
|
| CHEX | Chaetopappa exilis (Gray) Keck | Pentachaeta exilis ssp. exilis | Asteraceae
|
| CHFR2 | Chaetopappa fragilis (Brandeg.) Keck | Pentachaeta fragilis | Asteraceae
|
| CHHE | Chaetopappa hersheyi Blake | Guadalupe leastdaisy | Asteraceae
|
| CHIM | Chaetopappa imberbis (Gray) Nesom | awnless leastdaisy | Asteraceae
|
| CHLY | Chaetopappa lyonii (Gray) Keck | Pentachaeta lyonii | Asteraceae
|
| CHPA2 | Chaetopappa parryi Gray | Parry's leastdaisy | Asteraceae
|
| CHAET2 | Chaetopappa DC. | leastdaisy | Asteraceae
|
| CHMA18 | Chaiturus marrubiastrum (L.) Reichenb. | lion's tail | Lamiaceae
|
| CHAIT | Chaiturus Willd. | lion's tail | Lamiaceae
|
| CHEX2 | Chalcas exotica (L.) Millsp. | Murraya exotica | Rutaceae
|
| CHPA26 | Chalcas paniculata auct. non L. | Murraya exotica | Rutaceae
|