Английская Википедия:Arnica sororia
Шаблон:Short description Шаблон:Speciesbox
Arnica sororia is a North American species of flowering plant known by the common name twin arnica.[1] It is native to Western Canada (British Columbia, Alberta, Saskatchewan) and the Western United States (Washington, Oregon, California, Nevada, Utah, Idaho, Montana, Wyoming, South Dakota).[2] It grows in grasslands and in conifer forests,[3] as well as the sagebrush steppe.[4]
Arnica sororia is a rhizomatous perennial herb producing one or more hairy, glandular stems Шаблон:Convert tall. There are a few to several pairs of broadly lance-shaped leaves along the stem,[4] the lower ones borne on petioles. Leaves may reach up to 14 cm long.[5]
The inflorescence consists of a daisy-like flower head, rarely more than one per stem.[4] These are lined with phyllaries coated in glandular hairs. The flower head has a center of glandular yellow disc florets and a fringe of yellow ray florets. The fruit is an achene a few millimeters long with a white pappus.[5]
References
External links
- Jepson Manual Treatment
- United States Department of Agriculture Plants Profile
- Calphotos Photo gallery, University of California
- ↑ Calflora taxon report, University of California, Arnica sororia E. Greene, twin arnica
- ↑ Biota of North America Program 2014 county distribution map
- ↑ Flora of North America Vol. 21 Page 370 Twin arnica Arnica sororia Greene
- ↑ 4,0 4,1 4,2 Шаблон:Cite book
- ↑ 5,0 5,1 Greene, Edward Lee 1910. Ottawa Naturalist 23(12): 213
- Английская Википедия
- Arnica
- Flora of Western Canada
- Plants described in 1910
- Flora of the Northwestern United States
- Flora of the Southwestern United States
- Flora without expected TNC conservation status
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