Clasping Heliotrope
Clasping Milkweed
Clasping Water Horehound
Claspingleaf Pondweed
Claspingleaf St. Johnswort
Clavel De Muerto
Clearweed
Cleyera
Cliff Fern
Cliffbrake
Cliftonia
Climbing Aster
Climbing Cactus
Climbing Dayflower
Climbing Dogbane
Climbing False Buckwheat
Climbing Fern
Climbing Fetterbush
Climbing Hempvine
Climbing Nightshade
Climbing Rose
Climbing Tribisee
Climbingfig
Clinging Snakefern
Clinopodium
Clover
Clover Ash
Clubbed Creepingfern
Clubed Begonia
Clubmoss
Clustered Beaksedge
Clustered Blacksnakeroot
Clustered Bushmint
Clustered Clover
Clustered Dock
Clustered Mille Graines
Clustered Pellitory
Clustered Yellowtops
Clusterspike False Indigo
Clustervine
Cnicus
Cnidoscolus
Coast Cockspur Grass
Coast Tarweed
