Difference between revisions of "Polygonum sawatchense subsp. sawatchense"

Endemic
Synonyms: Polygonum douglasii subsp. johnstonii Polygonum douglasii var. johnstonii Munz Polygonum exile Coolidge Polygonum triandrum
Treatment appears in FNA Volume 5. Treatment on page 568.
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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

V5 1162-distribution-map.gif

Alta., Sask., Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., S.Dak., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
Mihai Costea +, François J. Tardif +  and Harold R. Hinds† +
Alta. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
800-3500 m +
Dry meadows, pastures, sagebrush and forests on sandy, gravelly, or rocky substrates +
Flowering Jun–Aug. +
Bull. Torrey Bot. Club +
Polygonum douglasii subsp. johnstonii +, Polygonum douglasii var. johnstonii +, Polygonum exile +  and Polygonum triandrum +
Polygonum sawatchense subsp. sawatchense +
Polygonum sawatchense +
subspecies +