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Parmelia saxatilis (L.) Ach. (redirected from: Parmelia saxatilis f. furfuracea)
Family: Parmeliaceae
[Geissodea saxatilis (L.) J. St.-Hil.,  more]
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Stephen Sharnoff  
Thallus: adnate, foliose, 4-20 cm in diam., lobate lobes: sublinear, contiguous, elongate, plane to subconvex, separate, 2-4 mm wide, apices truncate upper surface: gray (to brown in exposed habitats), smooth to foveolate, shiny, sometimes white pruinose, becoming cracked along prominent, effigurate pseudocyphellae isidia: cylindrical, simple to coralloid, abundant, laminal, dense; soredia and pustulae absent medulla: white with continuous algal layer lower surface: black, rhizinate, rhizines: moderately dense, black, simple to furcate Apothecia: rare, laminal, 2-8 mm wide; margin: usually isidiate; disc: red-brown to dark brown asci: clavate, 8-spored ascospores: ellipsoid, 16-18 x 9-11 µm Pycnidia: not seen Spot tests: upper cortex K+ yellow, C-, KC-, P+ yellow; medulla K+ yellow turning deep red, C-, KC-, P+ orange Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with salazinic acid (major) and consalazinic acids (minor). Substrate and ecology: on rocks in open habitats, rarely on trees World distribution: pantemperate and southern boreal Sonoran distribution: relatively rare on scree rocks in upper montane habitats, Arizona.
Parmelia saxatilis image
Lucy Taylor  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
Stephen Sharnoff  
Parmelia saxatilis image
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