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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
Hypotrachyna novella (Vain.) Hale
  Smithsonian Contr. Bot. 25: 49 (1975); Parmelia novella Vain., Acta Soc. Fauna Fl. Fenn. 7: 56 (1890); Parmelia brasiliana var. novella (Vain.) Lynge, Ark. Bot. 13: 115 (1914). T: Sitio, Minas Gerais, Brazil, E.A.Vainio 1028; lecto: TUR; isolecto: BM, FM, M, n.v., fide M.E.Hale, loc. cit.  
  Thallus adnate to tightly adnate, to 2–4 cm wide. Lobes crowded, sublinear, subdichotomously branched, 1–2.5 mm wide; margins entire. Upper surface grey or with yellow-brown tinge, darkening towards centre, flat, shiny, emaculate, continuous, lacking soredia, pustules and isidia. Medulla white. Lower surface densely rhizinate; rhizines densely dichotomously branched. Apothecia common, sessile, 2–7 mm wide; thalline exciple crenulate. Ascospores 10–12 × 5–6 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV+ yellow; medulla K-, C+ rose or C-, KC+ rose or red, P-; containing lichexanthone (major), colensoic acid, 4-O-methylphysodic acid, lividic acid (major), physodic acid, norcolensoic acid and oxyphysodic acid.
  Scattered in coastal and hinterland forests of north Qld; also occurs in South America. Grows on bark.  
  Elix (1994h)  

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

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