Microseris borealis
apargidium, bog microseris, northern silverpuffs

Distribution: Occurring west of the Cascades crest in Washington; southern Alaska to northern California.

Habitat: Sphagnum bogs and wet meadows in the mountains.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Sensitive in Washington (WANHP)

Pollination: Bumblebees, bees, flies, beetles


Glabrous, scapose perennial with milky juice, the stem 1-5 dm. tall.


Basal leaves elongate, entire or with a few backward-pointing teeth, 5-25 cm. long and 2-12 mm. wide, gradually tapering to the apex.


Heads solitary, the involucre bell-shaped, 10-13 mm. high, with a row of short bracts around the involucre bracts; flowers all ligulate, yellow, perfect; pappus of brownish, barbellate capillary bristles that are thickened and united at the base.


Achenes columnar, truncate, 5-6 mm. long, about 10-ribbed.

Accepted Name:
Microseris borealis (Bong.) Sch. Bip.
Publication: Jahresber. Pollichia. 22–24: 310. 1866.

Synonyms & Misapplications:
Apargia borealis Bong.
Apargidium boreale (Bong.) Torr. & A. Gray [HC]
Scorzonella borealis (Bong.) Greene
Additional Resources:

PNW Herbaria: Specimen records of Microseris borealis in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Microseris borealis checklist entry

OregonFlora: Microseris borealis information

E-Flora BC: Microseris borealis atlas page

CalPhotos: Microseris borealis photos

14 photographs:
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