Page authors: Don Knoke, David Giblin
Koenigia phytolaccifolia
alpine fleeceflower
Specimens
Photos

Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho, Montana, and Nevada.

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

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Description:
General:

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:

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:

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:
Koenigia phytolaccifolia (Meisn. ex Small) T.M.Schust. & Reveal
Publication: Intermount. Fl. [Cronquist et al.] 2A: 252. 2012.

Synonyms & Misapplications:
Aconogonon phytolaccaefolium (Meisn. ex Small) Rydb., orthographic variant
Aconogonon phytolaccaefolium (Meisn. ex Small) Rydb. var. phytolaccaefolium, orthographic variant
Aconogonon phytolaccifolium (Meisn. ex Small) Rydb.
Aconogonon phytolaccifolium (Meisn. ex Small) Rydb. var. glabrum S.P. Hong [FNA5, HC2]
Aconogonon phytolaccifolium (Meisn. ex Small) Rydb. var. phytolaccifolium [FNA5, HC2]
Polygonum phytolaccaefolium Meisn. ex Small, orthographic variant
Polygonum phytolaccifolium Meisn. ex Small
Additional Resources:

PNW Herbaria: Specimen records of Koenigia phytolaccifolia in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Koenigia phytolaccifolia checklist entry

OregonFlora: Koenigia phytolaccifolia information

E-Flora BC: Koenigia phytolaccifolia atlas page

CalPhotos: Koenigia phytolaccifolia photos

14 photographs:
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