Rhizocarpon eupetraeum (Nyl.) Arnold
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Rhizocarpon eupetraeum (Nyl.) Arnold (1870)
Rhizocarpon eupetraeum (Nyl.) Arnold
Biostatus
Nomenclature
Classification
Descriptions
Thallus rather small, greyish to brownish-grey to blackish, areolate, prothallus black, thin, spreading. Areolae minute, 0.1-0.2 mm diam., rounded or angular, somewhat congested, dispersed on prothallus, flat to subconvex, separated by wide to narrow cracks. Apothecia sessile, black, epruinose, rounded, constricted at base, scattered, minute, between areolae, to 0.3 mm diam., concave or plane, margins thin, entire, persistent. Hymenium blackish, K+ purple to colourless, 150-170 µm tall.Paraphyses filiform, branched, apices rounded. Asci ellipsoid-clavate, apices rounded, walls thick, subpedicellate, 8-spored. Hypothecium thick, brown-black. Ascospores biseriate, colourless at first, becoming brownish, oval to oval-oblong, apices rounded, ± curved, semilunar, 3-7-septate, becoming muriform, 26-30 × 9-12 µm.
Taxonomic concepts
Lecidea eupetraea Nyl.
Rhizocarpon eupetraeum (Nyl.) Arnold
Rhizocarpon eupetraeum (Nyl.) Arnold
Rhizocarpon eupetraeum (Nyl.) Arnold
Rhizocarpon eupetraeum (Nyl.) Arnold
Rhizocarpon lunulatum Zahlbr.
Rhizocarpon eupetraeum (Nyl.) Arnold
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Metadata
bfa51077-818f-46cf-80c0-2a70e8a79371
scientific name
Names_Plants
1 January 2000
16 July 2010