Usnea mutabilis
Usnea mutabilis is a grayish-yellowish pale green, unequally branching, shrubby (foliose) 3–7 cm long lichen commonly anchored on holdfasts on trees, mostly in eastern North America, sometimes in chaparral shurbs or pines in California.[1]:212 It is darker green than other members of the genus Usnea.[1]:212 The surface is covered with isolated, or clusters of, isidea.[1]:212 It lacks apothecia.[1]:212
| Usnea | |
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| in Delmarva | |
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| Species: | U. mutabilis |
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| Usnea mutabilis Stirt. (1881) | |
The common name is bloody beard lichen.[1]:212 The thick axis and medulla are dull red.[1]:212
References
- Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
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