Asclepias incarnata subsp. pulchra

(Ehrhart ex Willdenow) Woodson

Ann. Missouri Bot. Gard. 41: 53. 1954.

Common names: Swamp milkweed
IllustratedEndemic
Basionym: Asclepias pulchra Ehrhart ex Willdenow Sp. Pl. 1: 1267. 1798
Synonyms: A. incarnata var. neoscotica Fernald A. incarnata [unranked] pulchra (Ehrhart ex Willdenow) Persoon
Treatment appears in FNA Volume 14.

Stems 30–150 cm, densely pilose. Leaves: petiole 1–8 mm, pilose; blade lanceolate to ovate, 5–15 × 1.5–4.5 cm, surfaces pilose. Peduncles densely pilose. Pedicels pilose. Flowers: corolla dark pink to pink; corona dark to pale pink; anthers brown.


Phenology: Flowering Jun–Sep; fruiting Jul–Oct.
Habitat: Pond and lake shores, marshes, bogs, saturated sandy and rocky soils, wet meadows, flatwoods, riparian woods, thickets.
Elevation: 0–900 m.

Distribution

N.B., N.S., P.E.I., Conn., Del., D.C., Fla., Ga., Maine, Md., Mass., N.H., N.J., N.Y., N.C., Pa., R.I., S.C., Tex., Vt., Va.

Discussion

Subspecies pulchra is most common on the coastal plain east of the Appalachian Mountains. There are sporadic occurrences outside this region, and the sub­species has been collected at several sites in eastern Texas. A record from western Illinois (Henry County) may represent a mistaken locality or a waif—there is no evidence that subsp. pulchra persists there. Only a single record is known from Prince Edward Island (Blaney 3274 [ACAD]). The name A. incarnata var. pulchra is often seen in the literature, but this combination attributed to Persoon was unranked by him (K. Gandhi, pers. comm.).

Selected References

None.

Lower Taxa

None.
Mark Fishbein +
(Ehrhart ex Willdenow) Woodson +
Asclepias pulchra +
Swamp milkweed +
N.B. +, N.S. +, P.E.I. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Maine +, Md. +, Mass. +, N.H. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +, Tex. +, Vt. +  and Va. +
0–900 m. +
Pond and lake shores, marshes, bogs, saturated sandy and rocky soils, wet meadows, flatwoods, riparian woods, thickets. +
Flowering Jun–Sep +  and fruiting Jul–Oct. +
Ann. Missouri Bot. Gard. +
Illustrated +  and Endemic +
A. incarnata var. neoscotica +  and A. incarnata +
Asclepias incarnata subsp. pulchra +
Asclepias incarnata +
subspecies +