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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
Dirinaria aegialita (Afzel. ex Ach.) B.J.Moore

Bryologist 71: 248 (1968)

Parmelia aegialita Afzel. ex Ach., Methodus 191 (1803); Physcia aegialita (Afzel. ex Ach.) Nyl., Ann. Sci. Nat., Bot.,sér. 4, 15: 43 (1861).

T: Sierra Leone, ad lapides mari inundatos prope litora, A.Afzelius s.n. in Herb. Swartz; lecto: S n.v., fide D.D.Awasthi, Biblioth. Lichenol. 2: 64 (1975).

Dirinaria aspera (H.Magn.) D.D.Awasthi, Bryologist 67: 371 (1964); Physcia aspera H.Magn., in H.Magnusson & A.Zahlbruckner, Ark. Bot. 32A(2): 63 (1945). T: 1859 flow, N of Hualalai, Puuwaawaa region, Hawai’i, Hawaiian Islands, on bark, 11 Sept. 1938, O.Selling 5668 (Hawaii Bog Survey); holo: S n.v.

  Thallus 5–12 cm wide, loosely adnate, pinnately to subpinnately lobate. Lobes radiating, contiguous, plane to convex, but often concave towards the tips, 0.2–3.0 mm wide, distinctly flabellate towards the apices. Upper surface grey, bluish grey to yellow-grey or off-white, ±pruinose, dactylate and ±sorediate; dactyls clavate, bursting open at the apices and producing corticated granules and soredia, eventually apically crateriform. Medulla white in the upper part; lower medulla often orange, particularly towards the apices. Lower surface black in the centre, ±brown at the margins. Apothecia rare, sessile to ±constricted at base, 0.5–1.5 mm wide; disc black, rarely grey-pruinose. Epihymenium pale brown, 6–8 μm thick. Hymenium colourless, 80–90 μm thick. Hypothecium dark brown to brown-black, lentiform, 100–150 μm thick. Ascospores 16–22 × 7–9 μm. Conidia bacilliform, 4–5 × 0.8–1.0 μm.
CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow; medulla K–, C–, KC–, P–; containing atranorin (minor), chloroatranorin (minor), divaricatic acid (major), 3β-acetoxyhopane-1β,22-diol (minor),±unknown terpenes (minor).
  Occurs on bark, wood and rocks in the N.T., Qld and N.S.W.; in monsoon vine forest and in coastal and montane rainforest. Also in Africa, Asia, North, Central and South America and the Pacific Islands.  
  Elix (2009l)  

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

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