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Description

 Thallus: crustose, continuous, rather thick; surface: gray, coarsely granular or warted; Apothecia: single or in groups, 0.4-1.4 mm in diam., at first almost flat but soon becoming convex and ±globose; disc: pale yellow, pale orange, pale pink or almost ivory-white, epruinose; margin: concolorous with disc, at first distinct, level with disc, soon excluded and reflexed; exciple: laterally 55-90 µm wide, colorless or pale yellow (K+ intensifying) in upper part, fading below; hymenium: colorless except for diffuse spots and streaks of pale yellow pigment (K+ intensifying), 60-90 µm tall; paraphyses: 1.5-2 µm wide in mid-hymenium; apices: ±clavate or not at all thickened, 1.5-5 µm wide; hypothecium: colorless or pale yellow (K+ intensifying); asci: clavate, Biatora-type, 8-spored; ascospores: hyaline, 3-septate, fusiform, straight, 12-22 x 4-7 µm; Spot tests: all negative; Secondary metabolites: none detected.; Habitat and ecology: on decaying bryophytes at c. 3000 m; World distribution: boreal regions of North America and Europe; Sonoran distribution: known from a single locality on Greens Peak in eastern Arizona. 

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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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