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 Thallus: foliose or sometimes erect-subfruticose, small to medium sized, moderately or more commonly loosely attached, lobate; lobes: elongate, irregular to somewhat more rounded; upper surface: pale brown to dark brown or olive-brown; upper cortex: paraplectenchymatous; medulla: white; lower cortex: paraplectenchymatous; lower surface: usually tan or pale brown, sometimes dark brown in older parts, sparsely to moderately rhizinate; rhizines: usually concolorous with the lower surface, simple or sparsely furcate; Apothecia: with thalline exciple; asci: cylindrical and 8-spored; ascospores: simple, hyaline, globose to subglobose, 5-8 x 5-7 µm; Pycnidia: blackened, strongly emergent (usually as tall or taller than they are broad); conidia: bifusiform, 4.5-6 x 1 µm; Secondary metabolites: fatty acids, depsides or depsidones; Geography: primarily temperate or boreal, North America, Europe, Asia, Africa and South America; Substrate: bark, wood, rock, soil or mosses. 


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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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