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Anisomeridium anisolobum (Mull. Arg.) Aptroot
Family: Monoblastiaceae
[Arthopyrenia anisoloba Müll. Arg.,  more]
Anisomeridium anisolobum image
Harrie Sipman  
Thallus: continuous, immersed in the substrate upper surface: whitish, smooth photobiont: usually a trentepohlioid alga, but absent in Sonoran material Perithecia: hemispherical, black, semi-immersed in the thallus, 0.3-0.5 mm diam. perithecial wall: black, continuous below the hamathecium hamathecium: branched pseudoparaphyses, anastomosing above the asci; filaments: c. 1 µm wide, not inspersed with oil droplets asci: clavate, c. 75-100 x 10-15 µm, with 8, irregularly arranged ascospores ascospores: hyaline, ovoid, 1-septate with a submedian euseptum, 15-17 x 7-8 µm; walls: slightly ornamented with warts when old, without a gelatinous sheath Pycnidia: not observed Spot tests: all negative, UV- Secondary metabolites: none detected. Substrate and ecology: on bark of various woody plants World distribution: pantropical Sonoran distribution: only found in Baja California Sur and Sinaloa, but there not rare. Notes: It is a common, pantropical species, which is especially abundant in coastal regions. Remarkably, the Sonoran Desert material was not lichenized.