Rainiera

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Rainiera
Rainiera stricta 8474.JPG
Rainiera stricta in Mount Rainier National Park
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Senecioneae
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(Greene) Greene, is endemic to the northwestern United States (Oregon and Washington). [3] 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. [4]

Description

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

The genus name of Rainiera is in honour of Peter Rainier (1741–1808), who was a Royal Navy officer who served during the Seven Years' War, the American Revolutionary War and the Napoleonic Wars. From 1794 to 1805, he was commander-in-chief of the Navy's East Indies Station. [5]

The genus was circumscribed by Edward Lee Greene in Pittonia vol.3 on page 291 in 1898. [3]

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References

  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. 1 2 "Rainiera stricta (Greene) Greene | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 19 September 2022.
  4. ↑ USDA, NRCS (n.d.). "Rainiera stricta". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 18 October 2015.
  5. ↑ Burkhardt, Lotte (2022). Eine Enzyklopädie zu eponymischen Pflanzennamen [Encyclopedia of eponymic plant names](pdf) (in German). Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2022. ISBN   978-3-946292-41-8 . Retrieved January 27, 2022.
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