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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
Buellia dissa (Stirt.) Zahlbr.

Cat. Lich. Univ. 7: 357 (1931)

Lecidea dissa Stirt., Trans. Glasgow Soc. Field Naturalists 4: 94 (1875); Rinodina dissa (Stirt.) H.Mayrhofer, Beih. Nova Hedwigia 79: 532 (1984); Hafellia dissa (Stirt.) H.Mayrhofer & Sheard, in J.W.Sheard, Bryologist 95: 87 (1992).

T: “ad ligna decorticata in Tasmania”, 1875, H.Paton s.n.; holo: GLAM n.v.; iso: BM.

  Thallus corticolous or lignicolous, 1–4 cm wide, thin, continuous, membranous to areolate, white, grey-white or pale yellow-grey, uneven or occasionally verrucose. Prothallus not apparent. Apothecia 0.2–1.0 mm wide, sessile; disc black, epruinose, plane or becoming convex; margin black, moderately thick, persistent or excluded in convex apothecia. Proper exciple dark red-brown, paler in the inner part. Epihymenium 10–20 μm thick, brown to red-brown, K–. Hymenium 80–120 μm thick, inspersed with oil droplets. Hypothecium 140–160 μm thick, dark red-brown. Asci 2-spored. Ascospores 1-septate, 22–42 × 10–16 μm, with moderately strong subapical and septal wall thickenings; outer wall strongly ornamented. Conidia bacilliform, c. 5 × 1 μm.
CHEMISTRY: Thallus K+ yellow, C–, P+ yellow; containing atranorin (major), diploicin (major), isofulgidin (minor), fulgidin (minor or trace).
  Common in W.A., S.A., N.S.W., Vic. and Tas.; occurs on bark and dead wood in dry-sclerophyll forest. Also in South Africa.  
  Elix (2009l)  

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

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