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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Trichothelium ake-assii Becker & Lücking
  Flechten Follmann 170 (1995). T: Tai Natl Park, Ivory Coast, 05°52'N, 07°27'W, Sept.–Oct. 1992, U.Becker 101006; holo: M; iso: KOELN, RL, UB.  
  Thallus forming small round or irregular patches, pale greyish green, ±smooth, matt; prothallus not apparent. Algae Phycopeltis; cells subglobose, angular-rounded or shortly rectangular, not forming radiating plates. Perithecia superficial, hemispherical, 0.2–0.35 mm diam. (0.4–0.6 mm diam. including setae), black; setae (10–) 20 (–30), stiff, usually horizontal or oblique or slightly decurved, narrowly to broadly acute, black with whitish sometimes hair-like tips, at maturity contiguous or ±fused laterally to form a subapical plate with only the distal halves or tips free. Involucrellum brown-black in thin section, contiguous with the exciple except near the base where they diverge. Exciple 10–15 µm thick, pale to medium greenish brown. Asci narrowly to broadly obclavate, 80–110 × 17–22 µm. Ascospores fusiform to narrowly oblong, (7–) 9 (–11)-septate, 33–55 × 5–8 µm; perispore usually 1–2 µm thick at maturity. Pycnidia not seen. Trichothelium ake-assii map
  Known from one locality in rainforest in north-eastern Qld. Also in South America (Ecuador and Brazil) and West Africa (Ivory Coast). Foliicolous.  
  McCarthy (2001b)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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