Page author: David Giblin
Chaenactis thompsonii
Thompson's pincushion
WTU specimens
Other herbaria

Distribution: Occurring primarily in the serpentine slopes of the Wenatchee Mountains in Washington.

Habitat: Open, usually rocky areas, at moderate to mid-elevations in the mountains.

Flowers: June-August

Origin: Native

Conservation Status: Sensitive in Washington (WANHP)

Description:
General:

Thinly woolly-canescent perennial from a branched, woody base and taproot, the numerous stems 1-3 dm. tall.

Leaves:

Leaves all cauline, flat, pinnatifid, with a broad midrib, up to about 5 cm. long.

Flowers:

Heads discoid, few or solitary on each stem; involucre 10-14 mm. high, the bracts narrow and equal; flowers light pink, all perfect; pappus of 10-16 hyaline scales.

Fruits:

Achene.

Accepted Name:
Chaenactis thompsonii Cronquist
Publication: Vasc. Pl. Pacif. N.W. 5: 123, fig. [p. 125]. 1955. 1955.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Chaenactis thompsonii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Chaenactis thompsonii checklist entry.

E-Flora BC: Chaenactis thompsonii atlas page.

CalPhotos: Chaenactis thompsonii photos.

USDA Plants: Chaenactis thompsonii information.

15 photographs:
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