Page authors: David Giblin, Don Knoke
Koenigia davisiae
Newberry's fleeceflower
Specimens
Photos

Distribution: Occurring on both sides of the Cascades crest in Washington; Washington to California.

Habitat: Slopes and ridges in the subalpine and alpine.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Description:
General:

Herbaceous perennial from a thick root, usually with several simple or freely branched stems, ascending to erect, about 1.5-3.5 dm. tall, more or less reddish-brown throughout.

Leaves:

Leaves numerous, alternate, only slightly reduced upward, short-petiolate, the blade broadly lanceolate to oblong, 2-5 cm. long; sheathing stipules brownish, 5-15 mm. long, not lacerate.

Flowers:

Inflorescence of short, few-flowered racemes in upper leaf axils; perianth greenish-white to pinkish, 3-4 mm. long with a stipe-like base, the 5 segments obovate; stamens 8, on short filaments.

Fruits:

Achene with three sharp angles, yellowish-brown, smooth and shining, about 4 mm. long.

Accepted Name:
Koenigia davisiae (W.H.Brewer ex A.Gray) T.M.Schust. & Reveal
Publication: Taxon 64(6): 1201. 2015.

Synonyms & Misapplications:
Aconogonon davisiae (W.H. Brewer ex A. Gray) Soják
Aconogonon davisiae (W.H. Brewer ex A. Gray) Soják var. davisiae
Aconogonon davisiae (W.H. Brewer ex A. Gray) Soják var. glabrum (G.N. Jones) S.P. Hong
Polygonum davisiae W.H. Brewer ex A. Gray
Polygonum newberryi Small
Polygonum newberryi Small var. glabrum G.N. Jones
Polygonum newberryi Small var. newberryi
Additional Resources:

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

WA Flora Checklist: Koenigia davisiae checklist entry

OregonFlora: Koenigia davisiae information

E-Flora BC: Koenigia davisiae atlas page

CalPhotos: Koenigia davisiae photos

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