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Heterodermia erinacea (Ach.) W. A. Weber
Family: Physciaceae
[Anaptychia erinacea (Sm.) Trevis.]
Heterodermia erinacea image
Stephen Sharnoff  
Thallus: foliose to caespitose-subfruticose, irregular, very loosely adnate, up to 7 cm in diam., ± dichotomously lobate lobes: linear, elongate, up to 2 mm broad, but usually around 1 mm, 10-20 mm long, ± plane, sometimes prostrate but more often ascending, sometimes minutely bullate, ciliate; cilia: marginal, simple, black tipped, up to 7 mm long upper surface: gray to dark gray, usually with black spots from the abundant pycnidia; soredia and isidia absent upper cortex: prosoplectenchymatous medulla: white, lax, usually well developed lower cortex: lacking throughout lower surface: white, without a cortex, uneven, arachnoid, erhizinate Apothecia: ± abundant, very variable in size, short stipitate, up to 5 mm diam., without cilia on the margin; disc: black, plane, often pruinose asci: subclavate to clavate, 8-spored ascospores: brown, l-septate, ellipsoid, Physcia-type, (16-) 18-20.5 (-21.5) x (7.5-) 8-9.5 (-11) µm Pycnidia: ± abundant, inserted in thallus with black openings on the lobes conidia: bacilliform, 3.5-5 x 1µm Spot tests: cortex K+ yellow C-, KC-, P+ yellow; medulla K+ yellow, C-, KC-, P- Secondary metabolites: cortex with atranorin and chloroatranorin; medulla with atranorin and zeorin. Substrate and ecology: growing on tree trunks, shrubs and cacti in open situations World and Sonoran distribution: known from ± coastal parts of Baja California, Baja California Sur and southern California. Notes: The ± flat lobes with marginal cilia and abundant apothecia makes this common, coastal species easy to recognize.
Heterodermia erinacea image
Stephen Sharnoff  
Heterodermia erinacea image
Stephen Sharnoff  
Heterodermia erinacea image
Stephen Sharnoff  
Heterodermia erinacea image
Stephen Sharnoff  
Heterodermia erinacea image
Stephen Sharnoff  
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
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Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
Heterodermia erinacea image
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Heterodermia erinacea image