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Peltula richardsii (Herre) Wetmore (redirected from: Heppia richardsii)
Family: Lichinaceae
[Heppia richardsii Herre]
Peltula richardsii image
Stephen Sharnoff  
Thallus: squamulose, often in patches of multiple squamules several cm wide squamules: 2-6 (-10) mm diam., round, concave or rarely convex upper surface: brown-olive, smooth and shiny, not sorediate upper cortex: not developed but with a yellowish epinecral layer (30-45 µm thick) medulla: composed of loosely interwoven hyphae; algal layer: 75-105 µm thick lower cortex: absent or only poorly developed (2-3 rows of globose cells) lower surface: paler than the upper surface, attached centrally by large rhizines Apothecia: one per squamule (very rarely 2-3), immersed; disc: expanded, 0.5-3 (-5) mm in diam., red to yellow-brown; epihymenium: yellow-brown, K+ red-violet; hymenium: I+ wine-red, 165-170 µm high, >100-spored ascospores: globose, 6.6-8.3 µm diam. Pycnidia: no data available conidia: fusiform, 3.1-3.7 x 1.2 µm Spot tests: all negative Secondary metabolites: none detected. Substrate and ecology: on soil with high calcium levels, particularly in places particularly in places where water runs across the surface during heavy storms World distribution: SW North America to central Mexico Sonoran distribution: desert areas of Arizona, southern California, Sonora, Baja California and Baja California Sur.
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Stephen Sharnoff  
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image
Peltula richardsii image