Streptopus lanceolatus (Aiton) Reveal var. lanceolatus . Eastern Rose Mandarin, Eastern Twisted-stalk. Phen: Late Apr-early Jun; late Jul-Sep. Hab: Moist forests at high elevations, especially spruce-fir and northern hardwoods forests.

Origin/Endemic status: Native

Taxonomy Comments: Fassett (1935) recognized four varieties in S. roseus. Reveal (1993c) determined that the correct name for the species widely known as S. roseus is S. lanceolatus (Aiton) Reveal, and he transferred Fassett's varieties. Fassett (and Reveal) considered S. lanceolatus var. lanceolatus [S. roseus var. perspectus Fassett] to range from s. NL (Labrador) west to MI, south to NJ and PA, and in the mountains to w. NC, e. TN, and ne. GA (Jones & Coile 1988). S. lanceolatus var. longipes (Fernald) Reveal [S. roseus var. longipes (Fernald) Fassett] is midwestern, from s. ON and nw. PA west to MI, WI, MN, and s. MB. Var. curvipes (Vail) Fassett is western, ranging from AK to se. BC and nw. OR. Var. roseus was considered to be a Southern Appalachian endemic, differing from var. perspectus only in having the pedicel-peduncles entirely glabrous (vs. ciliate with few to many multicellular hairs). The number of hairs on the peduncles varies constantly, and recognition of two varieties in e. North America does not appear warranted; all of our material is then S. lanceolatus var. lanceolatus (in a broader sense), which does differ significantly from the more western varieties.

Synonymy: = K3, K4; < Streptopus lanceolatus (Aiton) Reveal – FNA26, NE, NY, Tn, Va; > Streptopus lanceolatus (Aiton) Reveal var. lanceolatus – K1; > Streptopus lanceolatus (Aiton) Reveal var. roseus (Michx.) Reveal – K1; < Streptopus roseus – RAB, S, W, WV; > Streptopus roseus var. perspectus Fassett – C, F, G, Pa, Fassett (1935); > Streptopus roseus var. roseus – C, F, G, Pa, Fassett (1935)

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