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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
Sticta sayeri Müll.Arg.
  Flora 71: 28 (1888). T: Bellenden Ker, Qld, W.A.Sayer; holo: G 002159; iso: MEL.  
  Thallus of rounded to reniform lobes, 1.5–5 (–8) cm tall; holdfast black, linking adjacent thalli by thick rhizoids; stalk smooth, terete, 3–10 mm tall, 0.5–2 mm diam., black at base, pale buff to ivory above. Lobes linear-laciniate, to irregularly lanceolate, simple or irregularly dichotomously branched, 2–8 (–15) mm wide, conspicuously grooved at insertion of stalk; apices rounded, truncate or shallowly furcate; sinuses rounded and distinctly thickened; margins entire, shallowly sinuous to irregularly notched, thickened below, occasionally with secondary lobules attached; without isidia, phyllidia or soredia. Upper surface pale grey-green when dry, lettuce-green to olive-green when wet, smooth or irregularly wrinkled or pitted, matt or glossy, ±canaliculate centrally. Photobiont green. Lower surface glabrous, glossy, smooth, ivory or white at margins to pale buff, irregularly wrinkled, ridged or puckered and ±costate centrally near stalk, without tomentum. Cyphellae scattered, to 0.1 mm diam., shallow, pin-prick-like; margins pale, slightly swollen; pit membrane white. Apothecia rare to occasional, marginal and laminal, sessile, 1–3 (–5) mm diam.; disc glossy, pale to dark red-brown; exciple corrugate-scabrid, dark brown to black. Ascospores fusiform, 1–3-septate, (24–) 33.5–44.5 (–50) × 8–11 (–14) µm, colourless to pale greenish.
  Occurs in north-eastern and south-eastern Qld and north-eastern N.S.W.; grows among mosses, its long stalks anchoring it to tree trunks, rotting logs and mossy rocks in stream beds in montane rainforest at altitudes of 750–1592 m. Also in New Guinea.  
  Galloway (2001b)  

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

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