UW Burke Herbarium species comparison

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Arnica lanceolata

clasping arnica, stream bank arnica
Habit Perennial from a freely-rooting rhizome, 3-8 dm. tall, more or less glandular and hairy.
Leaves

Cauline leaves 5-12 pairs, not much reduced upward, narrowly lance-elliptic or lance-ovate, sessile, more or less toothed, 5-12 cm. long and 1.2-6 cm. wide.
Flowers

Heads several;

involucre 9-15 mm. high, its bracts sharply pointed;

rays 8-14, pale yellow, 1-2 cm. long;

pappus tawny, sub-plumose.
Fruits

Achenes sparsely hirsute and sometimes glandular.

Arnica lanceolata
Flowering time June-August
Habitat Streambanks, moist woods and meadows from middle elevations to the subalpine.
Distribution
Occurring on both sides of the Cascades crest in Washington, including the Olympic Mountains and the northeastern region; Alaska to California, east to the Rocky Mountains, also in northeastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
A. chamissonis, A. cordifolia, A. discoidea, A. fulgens, A. gracilis, A. latifolia, A. longifolia, A. mollis, A. nevadensis, A. ovata, A. parryi, A. rydbergii, A. sororia
Subordinate taxa
A. lanceolata ssp. prima
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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