Arnica lanceolata subsp. prima
Novon 16: 2006.
Common names: Clasping arnica
Basionym: Arnica amplexifolia subsp. prima Maguire
Synonyms: Arnica amplexicaulis NuttallArnica amplexicaulis var. piperi H. St. John & F. A. WarrenArnica amplexicaulis subsp. prima (Maguire) MaguireArnica amplexicaulis var. prima (Maguire) B. Boivin
Treatment appears in FNA Volume 21. Treatment on page 373.
Revision as of 01:08, 27 July 2019 by FNA>Volume Importer
Leaves: basal commonly withered by flowering, sessile or subsessile to petiolate, blades usually oblong to narrowly lanceolate or oblanceolate, rarely ovate, margins subentire to prominently dentate-serrate; cauline sessile (bases sometimes partly connate-sheathing), blades narrowly to broadly lance-elliptic or ovate, margins subentire to serrate-dentate, faces sparsely to densely pilose. Phyllaries narrowly lanceolate. 2n = 38, 57, 76.
Phenology: Flowering May–Sep.
Habitat: Moist areas, along stream banks, snow-melt areas, montane to alpine meadows
Elevation: 0–3000 m
Distribution
Alta., B.C., N.W.T., Yukon, Alaska, Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
Discussion
The name Arnica amplexifolia Rydberg (1900c) was a superfluous (illegitimate) substitution for A. amplexicaulis Nuttall (1841).
Selected References
None.
Lower Taxa
None.