Anisomeridium biforme (Borrer) R. C. Harris — Overview

Anisomeridium Lichen learn more about names for this taxon

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 Thallus: continuous, not immersed in the substrate, effuse or delimited by a thin, blackish hypothallus; upper surface: whitish to greenish gray, smooth; photobiont: a trentepohlioid alga; Perithecia: hemispherical, black, semi-immersed in the thallus, 0.3-0.6 mm diam.; perithecial wall: black, with a well differentiated involucrellum, 50-100 µm thick; lower wall: pale or colorless, continuous below the hamathecium; hamathecium: branched pseudoparaphyses, anastomosing above the asci; filaments: c. 1 µm wide, not inspersed with oil droplets; asci: cylindrical, c. 70-100 x 10 µm, with 8, uniseriately arranged ascospores; ascospores: hyaline, ovoid, 1-septate with a slightly submedian euseptum, 13-15 x 5-6 µm, not ornamented, without a gelatinous sheath; Pycnidia: two types: 100-200 µm diam. or 40-100 µm diam.; conidia: respectively either subglobose to ellipsoid macroconidia, 2.3-4 x 1.8-2.7 µm or globose microconidia, 1-1.5 µm diam.; Spot tests: all negative, UV-; Secondary metabolites: none detected.; Substrate and ecology: on bark of various woody plants; World distribution: nearly cosmopolitan; Sonoran distribution: SW Arizona and California, including the Channel Islands, but there not rare. 


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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