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Heterodermia hypoleuca (Muhl.) Trevisan
Family: Physciaceae
[Anaptychia hypoleuca (Muhl.) Vain.,  more]
Heterodermia hypoleuca image
Stephen Sharnoff  
Thallus: foliose, irregular to orbicular, up to 5 cm diam. (forming colonies up to 15 cm diam.), loosely adnate with discrete, repeatedly dichotomously or irregularly lobate lobes: up to 2 mm broad, usually around 1 mm, irregularly or dichotomously branched; tips: not ascending, with small adventive lateral lobules, eciliate upper surface: greenish white or gray to dark gray or brownish, not or very weakly pruinose; soredia and isidia absent upper cortex: prosoplectenchymatous medulla: white lower cortex: absent lower surface: white to purple or almost black; rhizines: marginal, pale to black, ± abundantly branched Apothecia: ± common, variable in size, substipitate, up to 5 (-10) mm diam., sometimes cupshaped, shortly stipitate or sessile with lobulate margin; disc: brown to dark brown asci: cylindrical to subclavate, 8-spored ascospores: brown, l-septate, ellipsoid, Pachysporaria type, with or without sporoblastidia, (22.5-) 23.5-30.5 (-35.5) x (11-) 12.5-16 (-17) µm Pycnidia: ± common conidia: bacilliform, 4-5 x 1 µm [but Kurokawa (1962) reports 1-2 x 0.3-0.5 µm] Spot tests: cortex K+ yellow C-, KC-, P+ yellow; medulla K+ yellow or K+ yellow to orange, C-, KC-, P- or P+ yellow to orange Secondary metabolites: cortex with atranorin and chloroatranorin; medulla with atranorin, zeorin, leucotylin and ± norstictic acid. Substrate and ecology: growing on bark in fairly moist but open conditions World distribution: southern North America, Africa and eastern Asia Sonoran distribution: relatively common in SE Arizona and the Sierra Madre Occidental region of Chihuahua, Sonora and Sinaloa and on the mountains of the southern tip of Baja California Sur. Notes: The "wooly" upper lobe-tips, the ecorticate lower side, discrete lobes with small adventive lobes and lobulate apothecia identify the species. It could be characterized as the fertile counterpart of H. japonica.
Heterodermia hypoleuca image
Samuel Brinker  
Heterodermia hypoleuca image
Samuel Brinker  
Heterodermia hypoleuca image
Stephen Sharnoff  
Heterodermia hypoleuca image
Stephen Sharnoff  
Heterodermia hypoleuca image
Stephen Sharnoff  
Heterodermia hypoleuca image
Stephen Sharnoff  
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Andrew Khitsun  
Heterodermia hypoleuca image
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Heterodermia hypoleuca image
Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Heterodermia hypoleuca image
Andrew Khitsun  
Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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Heterodermia hypoleuca image
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