IUCN threat status:

Not evaluated

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Description

 Life habit: saprobic (photobiont absent); Thallus: immersed, inapparent; Ascomata: apothecial, stalked, black to brownish black; stalk: consisting of dark brown to aeruginose or pale, periclinally arranged hyphae; capitulum: obovoid to lens-shaped or strongly compressed; true exciple: well developed, persistent, consisting of dark brown, periclinally arranged hyphae; hymenium: covered by a thin layer of dark brown hyphae (the epithecium); asci: persisting until the maturity of the ascospores, then deliquescing cylindrical, 70-160 µm long, formed singly from ascogenous hyphae with croziers, with a single wall layer; apex: strongly and uniformly thickened, or penetrated by a short and blunt canal, with uniseriate spores; ascospores: not aggregated into a dry mass, simple or 1-3-septate, ellipsoid with rounded apices or fusiform, 10-21 x 4-8 µm, dark brown; wall: rather thick, dark brown, smooth or warted, not rupturing at maturity; Conidiomata: not observed; Secondary metabolites: none detected by TLC; some species with pigments that change color in K or N; Substrate: on twigs of vascular plants; species are usually confined to one genus of host plants; Geography: mainly in cool temperate to temperate areas of the Northern Hemisphere, with one species each occurring in Australasia and one in South America.; Notes: The species are very host specific.; Phaeocalicium: from the Sonoran region 

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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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