IUCN threat status:

Not evaluated

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Description

 Primary thallus: squamulose, soon disappearing; squamules: 7-10 mm long, 5-7 mm wide, irregularly lobed to deeply laciniate; podetia: (9-) 14-32 (-60) mm tall, 1-2 mm thick, glaucous gray to brown, dichotomously branched; axils: open, more rarely closed; tips: subulate, never cup-forming; surface: corticate, cortex thinning above base, scattered areolate to slightly raised-verruculate, giving rise to podetial squamules; squamules: abundant, 2-5 mm long, bearing granular material beneath, at apices granular-sorediate; Apothecia: infrequent, 0.5-2.0 mm wide, brown; ascospores: oblong to ellipsoid, 11-17 x 4-6 micro meter; Pycnidia: common, at tips of podetia, urn-shaped, constricted at base, with hyaline gelatin; conidia: 5-8 x 1-1.5 micro meter; Spot tests: K- or K+ dingy yellow to dingy brown, C-, KC-, P+ red, UV-; Secondary metabolite: fumarprotocetraric acid.; Habitat and ecology: on thin soil on road cuts and among mosses, usually terricolous, not seen on wood, in mainly coastal and oceanic habitats; World distribution: Asia, Australasia, Europe, North America, South America and sub-Antarctica; Sonoran distribution: Baja California and southern California.; Notes: Cladonia scabriuscula is morphologically similar to C. furcata. The podetia of C. scabriuscula can have sorediate tips, but intermediate forms may have scurfy to verruculose tips, and these characteristics may intergrade. Most of specimens from western North America are characterized by scurfy, non-squamule-forming bits of cortex at the apices. Cladonia scabriuscula is more frequent than C. furcata in the area, but has been overlooked in the past. In some populations these species are almost impossible to distinguish, but the details of their total distributions in the world are poorly known. 

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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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