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Hypotrachyna horrescens (Taylor) Krog & Swinsc. (redirected from: Parmelia horrescens)
Family: Parmeliaceae
[Parmelia horrescens Taylor,  more]
Hypotrachyna horrescens image
Stephen Sharnoff  
Thallus: tightly adnate to adnate, foliose, 2-6 cm in diam.; subdichotomously lobate lobes: narrow, sublinear,, contiguous and often imbricate, elongate, plane, 0.5-2 mm wide; apices: subrotund, often lacinate, ciliate; cilia: simple, up to 0.8 mm long upper surface: whitish to greenish gray, smooth, shiny, epruinose, emaculate, densely isidiate, isidia: cylindrical or slightly flatted and becoming lobulate-coralloid, apically spinulose to short-ciliate; soredia and pustulae absent medulla: white lower surface: black with a narrow, naked brown zone peripherally, densely rhizinate, rhizines black, simple to rarely squarrose or dichotomous Apothecia: rare, laminal, sessile, 1.5-4 mm diam.; margin: isidiate; disc: brown ascospores: simple, broadly ellipsoid, 16-18 x 10-12 µm Pycnidia: rare, laminal, immersed conidia: cylindrical, 3-5 x 0.5 µm Spot tests: cortex K+ yellow, C-, KC-, P+ yellow; medulla K-, C+ rose, KC+ red, P- Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with 3-methoxy-2,4-di-O-methylgyrophoric acid (major), gyrophoric, 2,4-di-O-methylgyrophoric, 5-O-methylhiascic, lecanoric and umbilicaric acids (all minor) and hiascic, 2-O-methylhiasic, 2,4,5-tri-O-methylhiascic, 4,5-di-O-methylhiascic, 3-hydroxyumbilicaric, 3-hydroxygyrophoric, 3-methoxyumbilicaric and 4-O-methylgyrophoric acids (all trace). Substrate and ecology: frequent on bark, rocks or mosses over rock in forests World distribution: pantemperate and montane pantropical Sonoran distribution: mountains of SE Arizona and Sinaloa in the Sierra Madre Occidental.
Hypotrachyna horrescens image
Troy McMullin  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Stephen Sharnoff  
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image
Hypotrachyna horrescens image