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Lepra ophthalmiza (Nyl.) Hafellner (redirected from: Pertusaria ophthalmiza)
Family: Pertusariaceae
[Pertusaria lecanina subsp. nigra Fink ex J. Hedrick,  more]
Lepra ophthalmiza image
Stephen Sharnoff  
Thallus: continuous to fissured or fissured-areolate, with very thin or thin to moderately thick verrucae; margins: entire, often zoned upper surface: ash gray to dark gray, smooth to tuberculate, shiny, epruinose soredia: restricted to verrucae fertile verrucae: sorediate, concolorous with thallus, lecanorate, numerous, sometimes fusing, c. 0.4-1.2 mm in diam. Apothecia: 1 (-4) per verruca; disc: blackish brown, level to sunken, whitish pruinose, later totally sorediate; epithecium: dark brown to black, K-; hypothecium: yellowish asci: clavate to cylindrical, 110-240 x 40-80 µm, 1-spored ascospores: hyaline, ellipsoid to cylindrical, 85-190 x 25-65 µm; spore wall: c. 2-12 µm thick, 1-layered Pycnidia: immersed conidia: bacilliform, 4-7 x 0.5-1.0 µm Spot tests: K-, C-, KC-, P-, UV- Secondary metabolites: no phenolic substances detectable. Substrate and ecology: on bark of numerous phorophytes, including Abies, Alnus, Juniperus, Pinus, Pseudotsuga, and Quercus, but also occurs on dead wood World distribution: circumboreal Sonoran distribution: coastal California and mountainous areas of Arizona, Chihuahua and Sinaloa at 2000 to 3000 m. Notes: Pertusaria ophthalmiza is characterized by a gray thallus with lecanorate verrucae with a crenulate margin, a white pruinose disc which soon becomes sorediate, single-spored asci and the absence of phenolic compounds. It is hardly confused with any other Pertusaria species in southwestern North America.
Lepra ophthalmiza image
Stephen Sharnoff  
Lepra ophthalmiza image
Stephen Sharnoff  
Lepra ophthalmiza image
Stephen Sharnoff  
Lepra ophthalmiza image
Stephen Sharnoff  
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image
Lepra ophthalmiza image