Slideshow image
Kirschsteiniothelia aethiops (Berk. & Curtis) D. Hawksw.
Family: Pleosporaceae
[Amphisphaeria aethiops (Berk. & M.A. Curtis) Sacc.,  more]
Kirschsteiniothelia aethiops image
Thallus: consisting of superficial hyphae (subiculum), dark brown to black photobiont: absent Perithecia: arising singly or in small groups, hemispherical, black, semi-immersed in the subiculum, 0.2-0.4 mm diam., base slightly or strongly applanate ascomatal wall: black, continuous below the hamathecium, with elongated cells in the corners (lophiostomoid) hamathecium: branched pseudoparaphyses, cellular, persistent, anastomosing above the asci; filaments: c. 1 micrometer wide, not inspersed with oil droplets asci: clavate, c. 70-95 x 13-18 micrometer, with 8, irregularly arranged ascospores ascospores: blackish brown, pyriform, 1-septate with a slightly submedian euseptum, 26-34 x 9-13 micrometer; walls: ornamented with tiny warts, without a gelatinous sheath Spot tests: all negative, UV negative Secondary metabolites: none detected. Substrate and ecology: on bark and wood of various woody plants, e.g. Alnus and Bursera. Also on Cactaceae, from which substrate it was first reported from the Sonoran Desert (Aptroot 1997) World distribution: pantropical or possibly nearly cosmopolitan Sonoran distribution: collected in southern Arizona, Baja California, Baja California Sur and Chihuahua.