Page authors: Don Knoke, David Giblin
Aconogonon phytolaccifolium
alpine fleeceflower

Distribution: East of the Cascades in Washington; Alaska south to the Sierra Nevada of California, east to Idaho and western Montana.

Habitat: Subalpine to alpine ridges, meadows and talus slopes.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern


Glabrous to pubescent herbaceous perennial from a thick root and branched crown, the stems several, stout, erect, simple or branched above, 8-20 dm. tall.


Leaves alternate, crowded, all cauline, only slightly reduced upward, petiolate, becoming subsessile above, the blade lanceolate to ovate-lanceolate, 6-12 cm. long; stipules brownish, oblique, not lacerate.


Flowers perfect, numerous, in terminal, subterminal and axillary panicles; perianth white to greenish-white, 2.5-3 mm. long, the 5 segments elliptic to obovate; stamens 8, included; styles 3, distinct, 0.5 mm. long.

Identification Notes:

Achene with 3 sharp angles, yellowish-brown, smooth, 4-5 mm. long.

Accepted Name:
Aconogonon phytolaccifolium (Meisn. ex Small) Rydb.
Publication: Fl. Rocky Mts. 1061. 1917. (as Aconogonum phytolaccaefolium).

Synonyms & Misapplications:
Polygonum phytolaccaefolium Meisn. ex Small, orthographic variant [HC]
Polygonum phytolaccifolium Meisn. ex Small
var. phytolaccifolium – poke knotweed    East of the Cascades in Washington; Washington south to California, east to Montana, Idaho and Nevada.
Additional Resources:

PNW Herbaria: Specimen records of Aconogonon phytolaccifolium in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Aconogonon phytolaccifolium checklist entry.

E-Flora BC: Aconogonon phytolaccifolium atlas page.

CalPhotos: Aconogonon phytolaccifolium photos.

USDA Plants: Aconogonon phytolaccifolium information.

10 photographs:
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