Difference between revisions of "Polygonum sawatchense subsp. sawatchense"
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|subfamily=Polygonaceae subfam. Polygonoideae | |subfamily=Polygonaceae subfam. Polygonoideae | ||
|genus=Polygonum | |genus=Polygonum | ||
Latest revision as of 22:08, 5 November 2020
Stems green to brownish, usually branched from base, 4–50 cm, glabrous. Leaves basal leaves caducous or persistent, distal leaves abruptly reduced to bracts, rarely much longer than flowers; ocrea glabrous; blade linear-lanceolate to narrowly oblong or oblanceolate, 15–45 × 2–8(–12) mm, margins usually revolute, smooth. Inflorescences axillary or axillary and terminal, long, open, racemes, 5–15 cm; cymes (1–)2–4-flowered. Pedicels 1–4 mm. Flowers closed; perianth (2.5–)3–3.5 mm; tube 25–40% of perianth length; tepals greenish or reddish with white or pink margins, oblong; midveins greenish or brown, unbranched or with few branches at base; stamens 3–8. Achenes ovate or elliptic, 2.5–3 mm.
Phenology: Flowering Jun–Aug.
Habitat: Dry meadows, pastures, sagebrush and forests on sandy, gravelly, or rocky substrates
Elevation: 800-3500 m
Distribution
Alta., Sask., Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., S.Dak., Utah, Wash., Wyo.
Discussion
Selected References
None.