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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 leptalea (Durieu & Mont.) A.L.Sm.
  in J.M.Crombie & A.L.Smith, Monogr. Brit. Lich. 2: 333 (1911); Biatora leptalea Durieu & Mont., Fl. Algér. Crypt. 1: 268 (1846–49). T: Algeria; holo: PC n.v.  
  Thallus epiphloeodal or epilithic, filmy to granulose, continuous to sparingly rimose, greyish green or pale to dark olive-green, matt, ±smooth to minutely uneven, c. 15–30 µm thick, ecorticate; prothallus not apparent. Algae Trentepohlia; cells 7–14 × 6–12 µm. Perithecia almost superficial, hemispherical to subglobose, 0.14–0.24 (–0.28) mm diam., dull orange-brown to red-brown; apex rounded or somewhat flattened; ostiole inconspicuous. Involucrellum contiguous with the exciple, sometimes incurved beneath, 25–40 µm thick, containing algae or covered by a thin layer of thallus, K–. Exciple c. 15 µm thick, hyaline to pale orange-brown. Centrum 0.1–0.2 mm wide. Asci cylindroclavate or narrowly obclavate, 70–100 × 7–11 µm. Ascospores fusiform, fusiform-cylindrical or oblong, 3-septate, 15–25 × 2–4 (–5) µm; perispore not apparent. Pycnidia ±hemispherical, 0.09–0.12 mm diam., orange-brown to reddish brown. Conidia ellipsoidal to bacilliform, 1.5–2.5 × 0.7 µm.
  Occurs in Christmas Is., south-eastern N.S.W., southern Vic. and Tas.; grows on shaded bark and siliceous rocks. Inconspicuous, but rather common in temperate regions of both hemispheres; occasional (overlooked?) in the tropics.  
  McCarthy (2001b)  

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

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