Rainiera

From Wikipedia, the free encyclopedia
  (Redirected from Rainiera stricta)
Jump to navigation Jump to search

Rainiera
Rainiera stricta 8474.JPG
Rainiera stricta in Mount Rainier National Park
Scientific classification
Kingdom:
(unranked):
(unranked):
(unranked):
Order:
Family:
Tribe:
Genus:
Rainiera

Greene
Species:
R. stricta
Binomial name
Rainiera stricta
(Greene) Greene

Rainiera is a monotypic genus of flowering plants in the daisy family, Asteraceae.[1][2] The single species, Rainiera stricta, is endemic to the northwestern United States (Oregon and Washington). The genus is part of the tribe Senecioneae, and appears to be most closely related to Luina, another genus of northwestern North America, in which it was once placed. Rainiera stricta is of conservation concern, with a G2G3 ranking from NatureServe, and is considered to be globally imperiled. It is known by the common name false silverback.[3]

Description[edit]

Rainiera stricta is an herbaceous perennial with both basal and cauline, alternate, petiolate leaves. It has 30-70 discoid heads arranged in a raceme-like or thyrse-like capitulescence. The disk florets are about 5 per head, and have yellow, sometimes purple-tinged corollas. The cypselae (achenes) are glabrous and have a pappus of white or straw-colored bristles. It is distinguished from Luina by the having fewer florets per head and a racemiform, rather than corymbiform, capitulescence.

Taxonomy[edit]

List of species:

Rainiera stricta (Greene) Greene

References[edit]

  1. ^ Flora of North America. "Senecioneae". Family List. 20: 540. Retrieved 2009-08-07.
  2. ^ Botanic Garden and Botanical Museum Berlin-Dahlem. "Details for: Senecioneae". Euro+Med PlantBase. Freie Universität Berlin. Retrieved 2009-08-07.
  3. ^ "Rainiera stricta". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 18 October 2015.