Streptopus amplexifolius

(Linnaeus) de Candolle

in J. Lamarck and A. P. de Candolle, Fl. Franç. ed. 3, 3: 174. 1805.

Basionym: Uvularia amplexifolia Linnaeus Sp. Pl. 1: 304. 1753
Synonyms: Streptopus amplexifolius subsp. americanus (Schultes) Á. Löve & D. Löve Streptopus amplexifolius var. americanus Schultes Streptopus amplexifolius var. chalazatus Fassett Streptopus amplexifolius var. denticulatus Fassett Streptopus amplexifolius var. grandiflorus Fassett Streptopus fassettii Tortipes amplexifolius
Treatment appears in FNA Volume 26. Treatment on page 146. Mentioned on page 145, 147.

Plants from thick rhizomes. Stems freely branched, stout, 5–12 dm, often with reddish hairs basally, nodes not fringed. Leaves 5–15 × 2.5–6 cm; blade ovate-oblong to oblong-lanceolate, base cordate-clasping, apex acuminate; peduncle: junction with pedicel abrupt, with glands indicating transition, entire structure 2–5 cm, glands short-stalked. Flowers 1–2 per axil; perianth campanulate; tepals spreading, recurved at tips, white to greenish yellow, narrowly oblong-lanceolate, 9–15 mm; stamens unequal, outer shorter, 0.8–1 mm, inner 2–3 mm; anthers lanceolate, 3–3.5 mm, apex 1-pointed; style stout, 4–5 mm; stigma fused from base to tip, unlobed; combined peduncles and pedicels recurved, 2–5 cm, short-stalked glands indicating transition; pedicel sharply geniculate, glabrous. Berries whitish green maturing to yellowish orange or red, ellipsoid, 10–12 mm. Seeds 2.5–3 mm. 2n = 16, 32.

Phenology: Flowering late spring–mid summer.
Habitat: Rich moist coniferous and deciduous woods
Elevation: 0–2800 m


V26 233-distribution-map.jpg

Greenland, St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Conn., Idaho, Maine, Mass., Mich., Minn., Mont., N.H., N.Mex., N.Y., N.C., Oreg., Pa., S.Dak., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Eurasia.


Several poorly defined races described by N. C. Fassett (1935) as varieties based chiefly on minute difference in leaf-margin serration are not here recognized.

Selected References


Lower Taxa

... more about "Streptopus amplexifolius"
Frederick H. Utech +
(Linnaeus) de Candolle +
Uvularia amplexifolia +
Greenland +, St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Conn. +, Idaho +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.Mex. +, N.Y. +, N.C. +, Oreg. +, Pa. +, S.Dak. +, Tenn. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +  and Eurasia. +
0–2800 m +
Rich moist coniferous and deciduous woods +
Flowering late spring–mid summer. +
in J. Lamarck and A. P. de Candolle, Fl. Franç. ed. +
Illustrated +
Streptopus amplexifolius subsp. americanus +, Streptopus amplexifolius var. americanus +, Streptopus amplexifolius var. chalazatus +, Streptopus amplexifolius var. denticulatus +, Streptopus amplexifolius var. grandiflorus +, Streptopus fassettii +  and Tortipes amplexifolius +
Streptopus amplexifolius +
Streptopus +
species +