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Aliseta Raf. Epiclinastrum Bojer ex DC. Aphyllocaulon Lag. Arnica / ˈɑːrnɪkə / is a genus of perennial, herbaceous plants in the sunflower family (Asteraceae). The genus name Arnica may be derived from the Greek arni, "lamb", in reference to the plants' soft, hairy leaves.
It is native to western North America from Alaska to California to New Mexico, as far east as Ontario and Michigan. [10] [11] It is a plant of many habitat types, including coniferous forests, and moist mountain meadows from sea level to altitudes of above 3,700 metres (12,000 ft), but most commonly between 1,200–3,400 m (4,000–11,000 ft).
Arnica latifolia is a perennial herb growing from a long rhizome and producing a hairy, mostly naked stem 10 to 50 centimeters tall. It has a cluster of leaves around its base and usually a few pairs along the lower part of the stem. The leaves are lance-shaped to broad and nearly heart-shaped, and are usually toothed. [5]
Arnica tomentosa Macoun, syn of subsp. tomentosa. Arnica angustifolia is an Arctic and alpine species of plants in the sunflower family, known by the common names narrowleaf arnica[2] and Arctic arnica. [3] It is native to colder regions in Europe, Asia, and North America (northern and western Canada, Alaska, northern Rocky Mountains. [4]
Arnica montana. Arnica montana is a flowering plant about 18–60 cm (7.1–23.6 in) tall aromatic fragrant, herbaceous perennial. Its basal green ovate leaves with rounded tips are bright coloured and level to the ground. In addition, they are somewhat downy on their upper surface, veined and aggregated in rosettes.
Arnica longifolia is a rhizomatous plant forming large bunching patches of groundcover in moist, cool areas. The foliage is rough, mint-green, and sometimes sticky with glandular secretions. The stems are erect and bear daisylike flower heads with deep yellow ray florets and yellow to reddish or orange disc florets.
Arnica discoidea is a North American species of arnica in the sunflower family. It is known by the common name rayless arnica because its flower heads have disc florets but none of the showier ray florets. [2] It is native to the woodlands, forests, and chaparral of the western United States ( Washington, Oregon, California, and western Nevada ...
Arnica latifolia var. gracilis (Rydb.) Cronquist. Arnica gracilis is a North American species of flowering plant in the family Asteraceae, known by the common name smallhead arnica. [2] [3] It is native to western Canada ( Alberta, British Columbia) and the northwestern United States ( Washington, Oregon, Idaho, Montana, Wyoming, north-central ...