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longleaf arnica
Scientific Name: Arnica lonchophylla
Family: Asteraceae
Category: Dicot
Growth: Forb/herb
Duration: Perennial
Other Names: MN (long-leaved arnica)
Arnica longifolia: Longleaf Arnica
Arnica longifolia, a member of the sunflower family (Asteraceae), is a North American species known by several common names.
Common Names
- Longleaf arnica
- Spearleaf arnica
- Seep-spring arnica
- Spearleaf Leopardbane
Taxonomy and Nomenclature
- Scientific Name: Arnica longifolia D.C. Eaton
- Family: Asteraceae (Sunflower family)
- Genus: Arnica
- Synonyms:
- Arnica lonchophylla Greene
- Related Taxa:
- Arnica alpina subsp. lonchophylla
Distribution and Habitat
Arnica longifolia is native to North America, particularly the western and southwestern United States. It can be found in areas where snow lies late into the summer, such as along the South Loop Road near the East Rim.
Morphological Characteristics
- Erect stems, solitary or clustered, ranging from 20 to 70 cm in height.
- Glandular-puberulent herbage.
- Cauline, sessile leaves, typically 5 to 7 pairs per stem.
- Leaves are entire, narrowly lanceolate, and 5 to 15 cm long.
- Daisy-like flower heads with deep yellow ray florets.
Quirky Facts
- The plant's distribution is meticulously mapped and updated, as evidenced by the MNFI's database of rare species and community occurrences.
Further Information
- USDA Plants Database
- CalPhotos
- Oregon Flora Project Atlas
- Discover Life