bio.wikisort.org - Plant

Arnica lanceolata is a North American species of flowering plant in the family Asteraceae, known by the common name clasping arnica[2] or lanceleaf arnica.[3] It has a disjunct (discontinuous) distribution in western North America and northeastern North America.[4][5]

Arnica lanceolata
Arnica lanceolata subsp. prima California
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Arnica
Species:	A. lanceolata
Binomial name
Arnica lanceolata Nutt.
Synonyms[1][2]
Arnica mollis var. petiolaris Fernald Arnica petiolaris (Fernald) Rydb. Arnica amplexicaulis Nutt., syn of subsp. prima Arnica amplexifolia Rydb., syn of subsp. prima

Arnica lanceolata is a perennial herb usually growing from a small rhizome and producing one or more hairy, glandular stems. The stems are lined with 5 to 10 pairs of oval-shaped, toothed leaves up to 12 centimeters long. The inflorescence is a cluster of several daisy-like flower heads with a center of brownish disc florets and a fringe of yellow ray florets 1 to 2 centimeters long. The fruit is a cylindrical achene covered in hairs and with a light brown pappus at one end.[2] It grows in moist areas, along stream banks, and montane to alpine meadows.[2]

Subspecies[1][2]

• Arnica lanceolata subsp. lanceolata - Quebec, New Brunswick, Maine, New Hampshire, Vermont, New York
• Arnica lanceolata subsp. prima (Maguire) Strother & S.J.Wolf - Alaska, Yukon, Northwest Territories, Alberta, British Columbia, Washington, Oregon, California, Idaho, Montana, Utah, Wyoming, Nevada

References

External links

• Go Botany, New England Wildflower Society
• Maine Department of Agriculture, Conservation and Forestry, Maine Natural Areas Program, Arnica lanceolata Nutt., Flower of Hairy Arnica description and ecological information with photos

---