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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
Porina atriceps (Vain.) Vain.
  Ann. Acad. Sci. Fenn., ser. A, 15(6): 364 (1921). Porina epiphylla var. atriceps Vain., J. Bot. 34: 295 (1896). T: Dominica, 1892, Elliot 517; holo: TUR n.v.  
  Thallus epiphyllous, small and scattered or confluent and forming rather large colonies, pale greyish green or yellowish grey, smooth to minutely and irregularly uneven; prothallus not apparent. Algae Phycopeltis; cells ellipsoidal, angular or irregular, not forming radiating plates. Perithecial verrucae shallowly convex to subconical or wart-shaped, 0.2–0.35 (–0.4) mm diam.; wall containing a layer of colourless crystals; ostiole inconspicuous; periostiolar area becoming more noticeable with age, finally dark brown to black and 0.1–0.15 mm diam. Involucrellum apical and ±vestigial to dimidiate. Exciple c. 20 µm thick, pale brown to pale yellowish brown. Asci mostly narrowly obclavate, 60–86 × 9–10 µm. Ascospores elongate-fusiform to oblong, 7-septate, 23–33 × 3–4 µm; perispore not apparent. Pycnidia not seen.
  Occurs in north-eastern Qld; grows on the leaves of shrubs and trees in lowland and montane rainforest. Also in the Neotropics, West Africa, India, SE Asia, New Guinea, Malesia, New Caledonia the Solomon Islands and Fiji.  
  McCarthy (2001b)  

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

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