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Haematomma fenzlianum A. Massal.
Family: Haematommataceae
[Haematomma saxicola R.W. Rogers,  more]
Haematomma fenzlianum image
Stephen Sharnoff  
Thallus: crustose, rimose to distinctly areolate, 0.3-1 mm thick surface: cream-colored to brownish gray, smooth or uneven, esorediate Apothecia: initially immersed but becoming adnate, scattered, 0.5-1.5 mm in diam. disc: cinnabar red to brick-colored, epruinose, several discs often confluent margin: concolorous with thallus, persistent, smooth, often not distinct from thallus, often thick exciple: red, thin epihymenium: bright red (K+ red or magenta to purple) hymenium: hyaline, 70-110 µm tall; paraphyses: strongly branched and reticulate, gelatinous, with only slightly swollen apices; hypothecium: hyaline asci: clavate, 8-spored ascospores: hyaline, transversely 3-7 septate, slightly curved to S-shaped, 20-30 x 3-5 µm Pycnidia: immersed conidia: filiform, curved, 13-18 x 0.9-1 µm Spot tests: thallus K+ yellow, C-, KC-, P+ yellow or P- Secondary metabolites: atranorin, russulone, plus in chemotype a sphaerophorin and isosphaeric acid, or in chemotype b sphaerophorin, isosphaeric acid and psoromic acid, or rarely in chemotype c psoromic acid. Substrate and ecology: on siliceous rocks (granite and rhyolite) in pine-oak forest World distribution: pantropical to subtropical or Mediterranean in southwestern North America, South America, Europe, South Africa, and Australasia Sonoran distribution: Arizona at 1200-2200 m, Chihuahua at 1950 m, and Sonora at 900-1525 m. Notes: Haematomma fenzlianum is characterized by its smooth, rimose to areolate, cream-colored, pale to brownish gray thallus, +immersed apothecia with cinnabar red discs, 3-7-septate spores, and usually containing sphaerophorin in addition to russulone.
Haematomma fenzlianum image
Stephen Sharnoff  
Haematomma fenzlianum image
Stephen Sharnoff  
Haematomma fenzlianum image
Stephen Sharnoff  
Haematomma fenzlianum image
Stephen Sharnoff  
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image
Haematomma fenzlianum image