Chaenactis thompsonii

Chaenactis thompsonii is a North American species of flowering plants in the aster family known by the common name Thompson's pincushion. It is found only in the northern Cascades in the US State of Washington.[1][2]

Chaenactis thompsonii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Tribe:
Heliantheae
Genus:
Chaenactis
Species:
C. thompsonii
Binomial name
Chaenactis thompsonii

Description

Chaenactis thompsonii is a perennial up to 30 cm (12 inches) tall, usually not forming clumps or mats. Each branch produces 1-3 flower heads each containing white or pale lavender disc florets but no ray florets.[3]

References
  1. Biota of North America Program 2014 county distribution map
  2. Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1984. Compositae. Part V.: 1–343. In C. L. Hitchcock Vascular Plants of the Pacific Northwest. University of Washington Press, Seattle.
  3. Flora of North America, Thompson’s pincushion, Chaenactis thompsonii Cronquist


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