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Usnea fragilis Stirt.

Family :

Parmeliaceae

Stirton, Scott. Natur. 6: 293. 1882

ID :

BU/BRL/2022/038

Thallus :

Corticolous or saxicolous, erect to pendulous, to 17 cm long, greenish grey to brown

Lobes :

Branching sub dichotomous to sympodial; branches non-articulate and non-inflated; main branch to 1.5 (-2) mm in diam.; lateral branch lets sparse to dense

Upper Side:

Surface of branches annularly cracked and longitudinally fissured in basal part, apical region tuberculate

Isidia :

Pseudocyphellate-sorediate to pseudo-isidiate

Lower Side :

​

Medulla :

​

Not known

Apothecia :

​

Ascospores :

Outer part of medulla red pigmented; central axis solid, colourless, I - Medulla K-, P-. Barbatic acid present

Chemistry :

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