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Description

 Life habit: lichenized; Thallus: squamulose, areolate or subsquamulose, margin slightly lobed or notched, without elongated lobes; prothallus: present, black; surface: orange, smooth, without asexual propagules; cortex: cellular, 15-30 µm thick, granules absent; medulla paraplectenchymatous, without granules; Apothecia: adnate, 0.1-0.6 mm in diam., lecanorine; disc: orange, flat, epruinose; margin: persistent, flush; thalline margin present or absent, concolorous with thallus; proper margin visible, concolorous with disc; parathecium: cellular (paraplectenchymatous) including exciple below hypothecium; epihymenium: golden, K+ red, 10%N-, cN-, C-; hymenium: hyaline, 60-80 µm tall; paraphyses: 2-3 tip cells slightly swollen, with few branches; subhymenium hyaline; asci: cylindrical, 8-spored; ascospores: hyaline, 2 locules, ellipsoid, 9.5-12.5 x 5.5-7 µm, isthmus 3-4 µm, spore end wall thin; Pycnidia: present, mostly immersed, ostiole orange; Spot tests: apothecial margin K+ red, 10% N-, cN-; thallus K+ red, 10%N-, cN-, C-, medulla IKI-; Secondary metabolites: parietin, fallacinal, emodin, and teloschistin.; Substrate and ecology: on non-calcareous or calcareous rocks; World distribution: worldwide; Sonoran distribution: southern California, Arizona, Baja California, Baja California Sur, western Chihuahua, Sonora, and northern Sinaloa.; Notes: See notes under C. squamosa

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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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