Cypripedium acaule


Hort. Kew.3: 303. 1789

Common names: Small pink lady’s-slipper pink moccasin-flower stemless lady’s-slipper cypripède acaule
Synonyms: Fissipes acaulis
Found in FNA Volume 26. Treatment on page 502. Mentioned on page 499.
FNA26 Plate 079.jpeg
Plants erect, 15–61 cm; stems leafless scapes. Leaves 2, radical, arising directly from rhizome, ascending to spreading; blade broadly elliptic to oblong-, ovate-, or obovate-elliptic, 9–30 × 2.5–15 cm. Flowers solitary; sepals reddish brown to green; dorsal sepal lanceolate to lance-ovate or elliptic, 19–52 × 5–22 mm; lateral sepals connate, synsepal 17–49 × 6–25 mm; petals deflexed to somewhat spreading, somewhat spirally twisted, same color as sepals, linear- to ovate-lanceolate, 24–60 × 4–17 mm; lip magenta to white, obovoid to oblance-ovoid, 30–67 mm, orifice a longitudinal fissure, length of lip; staminode quadrangular to suborbicular-rhomboid or ovoid-deltoid. 2n = 20.

Phenology: Flowering Apr–Jul.
Habitat: Dry to wet forests, bogs, brushy barrens, heath, and roadsides on highly acidic soil
Elevation: mostly 0–1200 m


Alta., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Ala., Conn., Del., D.C., Ga., Ill., Ind., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.




Facts about "Cypripedium acaule"
AuthorCharles J. Sheviak +
Common nameSmall pink lady’s-slipper +, pink moccasin-flower +, stemless lady’s-slipper + and cypripède acaule +
Elevationmostly 0–1200 m +
HabitatDry to wet forests, bogs, brushy barrens, heath, and roadsides on highly acidic soil +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering Apr–Jul. +
ReferenceNone +
SynonymFissipes acaulis +
Taxon nameCypripedium acaule +
Taxon parentCypripedium +
Taxon rankspecies +
VolumeVolume 26 +