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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
Peltula rodriguesii (Cromb.) Büdel
  Lichenologist 21: 293 (1989); Heppia rodriguesii Cromb., J. Linn. Soc. Bot. 15: 436 (1876). T: "Isle of Rodriguez", [Mauritius, Mascarenes], 1874, J.B.Balfour 2302; lecto: BM, fide B.Büdel, Lichenologist 21: 293 (1989).  
  Thallus squamulose-peltate, yellow-olive to yellow-brown; squamules to 2 mm diam., to 0.3 mm thick, plane to slightly convex, anchored by an umbilicus; mature thalli deeply divided into 3–5 lobes; margin smooth, not down-curved. Upper cortex absent or poorly developed; epinecral layer 7–10 µm thick, yellowish. Photobiont layer 80–85 µm thick. Medulla composed of loosely interwoven hyphae with globose to elongate cells. Lower cortex proso- to paraplectenchymatous, 20–25 µm thick. Apothecia immersed, several per squamule; disc punctifom, reddish brown; margin sometimes slightly protruding. Asci clavate to obclavate; ascus wall wine-red in iodine when mature, blue when immature; all asci blue after pretreatment with KOH. Ascospores many per ascus, globose to ellipsoidal, 3–6 × 2–3.5 µm. Pycnidia completely immersed, cerebriform; conidia fusiform, c. 1.5 × 0.5 µm.
  Known from W.A. and Qld; grows on acidic and volcanic rocks in arid and semi-arid habitats. Also known from Mauritius, southern Africa, Cape Verde Is. and Italy.  
  Büdel (2001)  

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

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