Usnea is a genus of fruticose lichens in the large family Parmeliaceae. The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. Species in the genus grow li
Usnea cavernosa Flickr pellaea
Usnea, as depicted in Dillenius's 1768 work Historia muscorum
Usnea angulata has ridged branches.
A fruticose lichen is a form of lichen fungi that is characterized by a coral-like shrubby or bushy growth structure. It is formed from a symbiotic relationship of a photobiont such as green algae or
Usnea
…Usnea is a genus of fruticose lichens in the large family Parmeliaceae. The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. Species…
Letharia vulpina, a species of fruticose lichen
Teloschistes chrysophthalmus
Group of fruiticose lichen