Polygonum polygaloides subsp. polygaloides

IllustratedEndemic
Synonyms: Polygonum polygaloides var. montanum Brenckle
Treatment appears in FNA Volume 5. Treatment on page 566. Mentioned on page 565.

Stems 5–25 cm. Inflorescences mostly confined to tips of branches, globose to ovoid, 7–14 × 8–15 mm; bracts ascending or appressed, oblong to broadly ovate or elliptic, 4–9 mm, ± rigid, margins flat, undulate, or sometimes revolute, white, scarious portion 0.5–1 mm wide; midveins thin, lateral veins thickened and prominent adaxially. Flowers: perianth 2.5–3 mm; tube 19–30% of perianth length; tepals white or pink; perianth tube and base of tepals often ± crisped or undulate; stamens 8. Achenes dark brown, ovate-lanceolate, 1.3–2.1 mm, reticulate with longitudinal ridges, dull.


Phenology: Flowering May–Aug.
Habitat: Dry beds of ponds and watercourses, roadsides, drainage pits
Elevation: 500-1800 m

Distribution

V5 1155-distribution-map.gif

Alta., Idaho, Mont., Oreg., Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
Mihai Costea +, François J. Tardif +  and Harold R. Hinds† +
Meisner +
Alta. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
500-1800 m +
Dry beds of ponds and watercourses, roadsides, drainage pits +
Flowering May–Aug. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Illustrated +  and Endemic +
Polygonum polygaloides var. montanum +
Polygonum polygaloides subsp. polygaloides +
Polygonum polygaloides +
subspecies +