Calystegia spithamaea subsp. purshiana

(Wherry) Brummitt

Ann. Missouri Bot. Gard. 52: 215. 1965.

Endemic
Basionym: Convolvulus purshianus Wherry Proc. Pennsylvania Acad. Sci. 7: 163. 1933
Treatment appears in FNA Volume 14.

Plants (15–)25–35(–40) cm; habit ± compact. Herbage tomentose, hairs sometimes whitish. Leaf blades narrowly elliptic, ± conduplicate, base lobed, lobes 4–11 mm. Flowers: corolla 35–47(–53) mm; stamens 21–26 mm.


Phenology: Flowering May–Aug.
Habitat: Clay-loam, shale barrens.

Distribution

Md., N.Y., Pa., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.