Arnica nevadensis

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Arnica nevadensis
Arnica nevadensis flowers, at the Giardino Botanico Alpino Chanousia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Arnica
Species: A. nevadensis
Binomial name
Arnica nevadensis
A.Gray
Synonyms

Arnica tomentella

Arnica nevadensis is a species of arnica known by the common names Nevada arnica and Sierra arnica. It is native to the coniferous forests of the western United States.

It is a perennial herb producing one or more hairy, glandular stems up to about 30 centimeters tall. There are two or three pairs of leaves along mainly the lower half of the stem, each oval in shape with the lowest up to 8 centimeters long.

The inflorescence holds one to three daisylike flower heads lined with phyllaries coated in glandular hairs. The flower head has a center of yellow disc florets and a fringe of yellow ray florets. The fruit is an achene with a white to cream-colored pappus.

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