Usnea rubicunda, commonly known as the red beard lichen, is a type of arboreal lichen native to temperate regions in North, Central and South America, as well as Europe, Eastern Asia, and North Africa. This fruticose species forms hair-like hanging clusters that are orange to red in color. It is at risk of extirpation in Canada.
- Goward, T, IM Brodo, SR Clayden. 1998. Rare lichens of Canada: A review and provisional listing. Committee on the Status of Endangered Wildlife in Canada. Ottawa. 74 pp.
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