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Gerbera Boehm. 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.
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]
It has two to four pairs of leaves on the stem, each on a long petiole. The leaves are heart-shaped to arrowhead-shaped and finely toothed along the edges. The inflorescence bears one or more daisylike flower heads 5–9 cm (2– 3+1⁄2 inches) in width, [ 3 ] lined with white-haired phyllaries and sometimes studded with resin glands.
Arnica tomentulosa Rydb. Arnica chamissonis, the Chamisso arnica, [2] is a North American species of plants in the family Asteraceae. It is very similar to Arnica montana. Arnica chamissonis is native to North America and naturalized in parts of Europe while A. montana is indigenous to Europe. [3][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 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 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 parryi is a North American species of flowering plant known by the common names Parry's arnica or nodding arnica. [3] It is native to western Canada ( Yukon, British Columbia, Alberta) and the western United States as far south as Inyo County, California and McKinley County, New Mexico. It grows in temperate coniferous forests and alpine ...