Oreocarya thompsonii

Oreocarya thompsonii is a species of flowering plant in the genus Oreocarya with the common name Thompson's cryptantha (it was previously placed in the genus Cryptantha).[1]

Oreocarya thompsonii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Boraginales
Family: Boraginaceae
Genus: Oreocarya
Species:
O. thompsonii
Binomial name
Oreocarya thompsonii
(I.M.Johnst.) Abrams

Description

The leaves form a low basal rosette or cluster of rosettes. Individual leaves are linear and gray-green, and are covered with short white hairs, interspersed with much longer hairs especially near the leaf edge (ciliate). The largest basal leaf is about 4–7 cm long and 5–10 mm wide, with progressively smaller leaves higher on the rosette. Flower stems arise from the base of the leaf rosette and are 20–40 cm tall, bearing clusters of small flowers with 5 white petals and a yellow center. The peduncle (flower stalk) bears additional alternate leaves, which often bear smaller flower clusters from their axil. The flower clusters and stems are densely covered with very prominent translucent white trichomes.[2]

Oreocarya thompsonii leaf rosette growing in the Wenatchee Mountains, WA
Oreocarya thompsonii growing in the Wenatchee Mountains, WA

Range

Oreocarya thompsonii is endemic to the Wenatchee Mountains in Washington State.[2]

Habitat

Oreocarya thompsonii is found on high rocky slopes, usually associated with serpentine rock.[2]


References
  1. "Oreocarya thompsonii (Thompson's Cryptantha)". iNaturalist. Retrieved 2022-09-19.
  2. Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 425. University of Washington Press, Seattle.
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