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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
Diorygma pruinosum (Eschw.) Kalb, Staiger & Elix

Symb. Bot. Upsal. 34(1): 166 (2004)

Leiogramma pruinosum Eschw., in C.F.P. von Martius, Icon. Sel. Pl. Crypt. 1(12): tab. 7, fig. 3 (1828); — Cyclographina pruinosa (Eschw.) D.D.Awasthi, Norweg. J. Bot. 26: 175 (1979).

T: prope Bahia, Brazil, coll. unknown; holo: M n.v.

Platygrapha? [sic] albovestita C.Knight, Trans. Linn. Soc. London, Bot. 2: 43 (1882); Graphina albovestita (C.Knight) F.R.M.Wilson, nom. nud.; Schismatomma albovestitum (C.Knight) Zahlbr., Cat. Lich. Univ. 2: 553 (1923). T: [near Sydney], N.S.W., C.Knight [vol. 69A, p. 20, no. 26]; holo: WELT; iso: M n.v.

[Graphina platyleuca auct. non (Nyl.) Zahlbr.: A.W.Archer, Biblioth. Lichenol. 94: 29 (2006)].

  Thallus greenish white, smooth, dull. Ascomata conspicuous, open, immersed, becoming subsessile, white, irregularly ellipsoidal, straight or curved, 1–4 mm long, 0.4–1.0 mm wide; thalline margin inconspicuous at first, becoming prominent. Surface of disc densely white-pruinose, exposing the black epihymenium when abraded. Proper exciple thin, complete and reddish brown to black, or lacking. Hymenium 150–200 µm thick, I–. Ascospores 1 per ascus, densely muriform, (100–) 125–150 (–175) × 20–30 µm, I+ blue-violet.
CHEMISTRY: Protocetraric acid, ±convirensic acid.
  Corticolous in eastern Qld and N.S.W.; mainly pantropical.  
  Archer (2009a)  

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

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