Usnea mutabilis

Usnea
Scientific classification
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Usnea
Species: U. mutabilis
Binomial name
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 Usnea genus.[1]:212 The surface is covered with isolated, or clusters of, isidea.[1]:212 It lacks apothecia.[1]:212

The common name is bloody beard lichen.[1]:212 The thick axis and medulla are dull red.[1]:212

Lichen spot tests are

References

  1. 1 2 3 4 5 6 Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
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