(110)__Corallorhiza odontorhiza, commonly known as Autumn coral-root;

(111)__Cornus florida, commonly known as flowering dogwood;

(112)__Crassula aquatica, commonly known as pygmyweed;

(113)__Cryptogramma stelleri, commonly known as slender cliffbrake;

(114)__Cryptotaenia canadensis, commonly known as wild chervil;

(115)__Cynoglossum virginianum, commonly known as northern wild comfrey;

(116)__Cyperus aristatus, commonly known as awned sedge;

(117)__Cyperus erythrorhizos, commonly known as red- root flatsedge;

(118)__Cyperus houghtonii, commonly known as Houghton's umbrella-sedge;

(119)__Cypripedium arietinum, commonly known as ram's-head lady's-slipper;

(120)__Cypripedium reginae, commonly known as showy lady's-slipper;

(121)__Descurainia incana, commonly known as Richardson's tansy-mustard;

(122)__Diapensia lapponica, commonly known as Lapland diapensia;

(123)__Dicentra canadensis, commonly known as squirrel-corn;

(124)__Diphasiastrum x sabinifolium, commonly known as ground-fir;

(125)__Diphasiastrum sitchense, commonly known as Alaskan clubmoss;