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North American Lichen Herbaria
- building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities -
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Peltula obscurans (Nyl.) Gyelnik  
Go To Encyclopedia of Life...
Family: Peltulaceae
[Acarospora subglebosa (Müll.Arg.) Hue, moreEndocarpiscum obscurans Nyl., Heppia acarosporoides Müll.Arg., Heppia guepinii var. obscurans (Nyl.) Boistel, Heppia obscurans (Nyl.) Nyl., Heppia subglebosa (Müll. Arg.) I.M. Lamb, Peltula subglebosa (Müll. Arg.) Filson, Placodium subglebosum Müll.Arg.]
Peltula obscurans image
Stephen Sharnoff  
  • Greater Sonoran Desert
  • Web Links
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2002. Lichen Flora of the Greater Sonoran Desert Region. Vol 1.
Thallus: squamulose, often widely scatted but in aggregate sometimes rosette-shaped squamules: lightly or deeply lobed, flat to convex, up to 2 mm diam. upper surface: olive-brown to brown, not sorediate upper cortex: not developed but with a yellowish epinecral layer (11-13 µm thick) medulla: consisting of loosely interwoven hyphae and partly paraplectenchymatous; algal layer: 90-180 µm thick lower cortex: usually present but not distinguishable from medulla lower surface: paler than the upper surface, attached by a branched umbilicus Apothecia: one per squamule (extremely rarely 2-3), adnate, with a raised rim when mature; disc: red to yellow-brown, 0.5-1 mm in diam.; epihymenium: yellowish brown, K+ red-violet; hymenium: I+ wine-red, 70-150 µm high asci: clavate to obclavate; wall: I+ orange but blue after pretreatment with K, >100-spored ascospores: ovoid to ellipsoid, 4.5-7.6 x 3 µm Pycnidia: immersed conidia: ovoid-fusiform, 3.1-3.7 x 1.2 µm Spot tests: all negative Secondary metabolites: none detected. Substrate and ecology: usually on acidic rocks, occasionally calcareous one and soil in deserts and other open, arid habitats World distribution: southern Europe, South America, SW North America, Africa, Asia, Australia and Papua New Guinea Sonoran distribution: Arizona, California, Baja California, Baja California Sur, and Sonora.
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Peltula obscurans
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Peltula obscurans image
Sheila Strawn  
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Stephen Sharnoff  
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394