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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
Degeliella rosulata (P.M.Jørg. & D.J.Galloway) P.M.Jørg.
  Biblioth. Lichenol. 88: 236 (2004)
Degelia rosulata P.M.Jørg. & D.J.Galloway, Fl. Australia 54: 314 (1992). T: T: Crozier Point, Auckland Islands, N.Z., P.W.James 780D; holo: BM.
  Thallus ±forming rosettes of coalescing to ±imbricate squamules, to 3 cm wide. Squamules round to irregular (0.1–) 0.3–1 (–3) mm wide, resting on a prominent, black or blue-black prothallus with slightly enlarged marginal lobes. Upper surface becoming lobulate centrally, matt, slate blue-grey when wet, pale grey to fawn when dry. Apothecia common, ±central on squamules, 0.1–1.5 mm wide; disc flat, red-brown, with prominent paler proper exciple; thalline exciple variously developed, of secondary lobules arising from apothecium base, forming crown-like structure; hymenium I+ red-brown. Ascospores simple, ellipsoidal, 10–15 × 5–8 µm, hyaline.
  Known in Australia from a single collection from Tas., on bark of trees in cool, humid rainforest; known also from Auckland Islands, N.Z.  
  Jørgensen & Galloway (1992a)  

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

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