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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 octomera (Müll.Arg.) F.Schill.
  Hedwigia 67: 274 (1927); Phylloporina octomera Müll.Arg., Flora 73: 198 (1890). T: Brazil, J.I.Puiggari 368; lecto: G n.v., fide R.Santesson, Symb. Bot. Upsal. 12(1): 264 (1952).  
  Thallus epiphyllous, small and scattered or confluent and forming rather large colonies, continuous, medium greyish green, smooth, matt; prothallus thin, whitish. Algae Phycopeltis; cells rectangular, forming radiating plates. Perithecia superficial, subglobose to globose, attenuated at the base, 0.2–0.26 mm diam., medium orange-brown, smooth to finely and sparsely pilose, matt; apex rounded or plane; ostiole inconspicuous. Involucrellum contiguous with the exciple, sometimes incurved beneath, 30–40 µm thick, not containing algae or crystals, but with a thin thalline covering near the base. Exciple c. 20 µm thick, pale yellow-brown. Asci narrowly obclavate to elongate-cylindrical, 65–78 × 10–12 µm. Ascospores oblong to narrowly fusiform, 7-septate, 25–33 × 3–5 µm; perispore thin or not apparent. Pycnidia not seen.
  Occurs in north-eastern Qld; grows on the leaves of rainforest trees and shrubs. Most common in the Neotropics, but also in West Africa, India and SE Asia.  
  McCarthy (2001b)  

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

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