Cypripedium parviflorum var. pubescens

(Willdenow) O. W. Knight

Rhodora 8: 93. 1906.

Common names: Cypripède pubescent
IllustratedEndemic
Basionym: Cypripedium pubescens Willdenow Hort. Berol. 1: plate 13. 1804 Cypripedium veganum P. Barker & M. Barker
Synonyms: Cypripedium calceolus var. planipetalum (Fernald) Victorin & J. Rousseau Cypripedium calceolus var. pubescens (Willdenow) Correll Cypripedium flavescens Cockerell Cypripedium parviflorum var. planipetalum Fernald
Treatment appears in FNA Volume 26. Treatment on page 506. Mentioned on page 502, 504, 505, 507.

Bracts: abaxial surface of distalmost sheathing bract (and often the next) densely and conspicuously silvery-pubescent when young (later sometimes glabrescent). Leaves 3–5, on proximal portion of or more evenly spaced along stem, alternate, erect to spreading; blade orbiculate or broadly ovate to elliptic-lanceolate or oblanceolate, 7.9–20.9 × 1.5–12 cm. Flowers 1–2, large to rather small (very small in some boreal and northern cordilleran specimens), scent moderate to faint, rose or musty; sepals commonly spotted, striped, and reticulately marked with reddish brown or madder, rarely extensively blotched or wholly unmarked; lip oblance-ovoid to calceolate or subglobose, 20–54 mm; orifice 10–23(–27) mm. 2n = 20.


Phenology: Flowering Apr–Aug.
Habitat: Mesic deciduous and coniferous forest, openings, thickets, prairies, meadows, fens
Elevation: 0–2900 m

Distribution

V26 1031-distribution-map.jpg

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., Que., Sask., Ariz., Colo., Conn., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., N.H., N.J., N.Mex., N.Y., N.C., Ohio, Oreg., Pa., R.I., Tenn., Utah, Vt., Va., Wash., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
Charles J. Sheviak +
(Willdenow) O. W. Knight +
Cypripedium pubescens +  and Cypripedium veganum +
Cypripède pubescent +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, Que. +, Sask. +, Ariz. +, Colo. +, Conn. +, D.C. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, Ohio +, Oreg. +, Pa. +, R.I. +, Tenn. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +  and Wis. +
0–2900 m +
Mesic deciduous and coniferous forest, openings, thickets, prairies, meadows, fens +
Flowering Apr–Aug. +
Illustrated +  and Endemic +
Cypripedium calceolus var. planipetalum +, Cypripedium calceolus var. pubescens +, Cypripedium flavescens +  and Cypripedium parviflorum var. planipetalum +
Cypripedium parviflorum var. pubescens +
Cypripedium parviflorum +
variety +