Polygonum polygaloides subsp. kelloggii

(Greene) J. C. Hickman

Madroño 31: 251. 1984.

Common names: Kellogg’s knotweed
Endemic
Basionym: Polygonum kelloggii Greene Fl. Francisc., 134. 1891
Synonyms: Polygonum minutissimum L. O. Williams Polygonum unifolium Small ex Rydberg
Treatment appears in FNA Volume 5. Treatment on page 567. Mentioned on page 565.

Stems 2–15 cm. Inflorescences mostly terminal, prolonged almost to base of stems, ovoid, 3–15 × 5–15 mm, or ± continuous; bracts ± patent, linear to linear-lanceolate, 7–25 mm, soft, margins flat or revolute, green, not scarious; lateral and midveins inconspicuous. Flowers: perianth 1.5–2.3 mm; tube 19–34% of perianth length; tepals pink or white; perianth tube and base of tepals smooth; stamens 3. Achenes light yellow to greenish brown, ovate, 1.3–1.7 mm, smooth to obscurely longitudinally reticulate, shiny.


Phenology: Flowering Jun–Sep.
Habitat: Mountain meadows, seeps, vernal pools, dry subalpine slopes
Elevation: 1300-3300 m

Distribution

V5 1158-distribution-map.gif

B.C., Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
Mihai Costea +, François J. Tardif +  and Harold R. Hinds† +
(Greene) J. C. Hickman +
Polygonum kelloggii +
Kellogg’s knotweed +
B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
1300-3300 m +
Mountain meadows, seeps, vernal pools, dry subalpine slopes +
Flowering Jun–Sep. +
Polygonum minutissimum +  and Polygonum unifolium +
Polygonum polygaloides subsp. kelloggii +
Polygonum polygaloides +
subspecies +