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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 heterochroa (Hale & Kurok.) Elix
  Lichenes Australasici Exsicc. 4: 82 (1985). Based on Parmelia hypoxantha Stirt., Trans. & Proc. New Zealand Inst. 32: 76 (1899), nom. illeg. non Parmelia hypoxantha Müll.Arg., Flora 64: 85 (1881) [= Chondropsis semiviridis (F.Muell. ex Nyl.) Nyl. ex Cromb.]; Parmelia heterochroa Hale & Kurok., Contr. U.S. Natl Herb. 36: 154 (1964). T: Warwick, Qld, Gwyther s.n.; lecto: BM, fide R.W.Rogers, Austrobaileya 1: 506 (1982). Parmelia tiliacea var. stenophylla Müll.Arg., Flora 66: 46 (1883). T: Toowoomba, Qld, Hartmann; holo: G, n.v., fide M.E.Hale & S. Kurokawa, loc. cit. Parmelia tiliacea var. rugulata Müll.Arg., Nuovo Giorn. Bot. Ital. 23: 388 (1891); Parmelia quercina var. rugulata (Müll.Arg.) Zahlbr., Cat. Lich. Univ. 6: 191 (1929). T: Brisbane, Qld, Bailey s.n.; lecto: G, n.v., fide M.E.Hale & S.Kurokawa, loc. cit. Parmelia tiliacea var. convexula Müll.Arg., Bull. Herb. Boissier 4: 90 (1896). T: Brisbane, Qld, Shirley 1665; holo: G, n.v., fide M.E.Hale & S.Kurokawa, loc. cit..  
  Thallus adnate, to 3–6 cm wide. Lobes contiguous, sublinear, subdichotomously branched, 1–2 mm wide; margins entire; apices incised. Upper surface whitish grey, flat, shiny, continuous, emaculate, without soredia, pustules and isidia. Medulla mostly white; lower medulla orange-brown. Lower surface moderately to densely rhizinate; rhizines densely dichotomously branched. Apothecia common, sessile, 2–4 mm wide; thalline exciple smooth to undulate. Ascospores 10–13 × 6–8 µm. Pycnidia scattered. Conidia 5–8 × 1 µm. CHEMISTRY: cortex K+ yellow, UV-; medulla K-, C-, P+ orange-red; lower medulla K+ violet; containing atranorin, chloroatranorin, protocetraric acid (major), skyrin (in lower medulla) and unidentified pigment (in lower medulla).
  Scattered, occurs in coastal and hinterland areas of eastern Australia (Qld and N.S.W.). Also in New Zealand. Grows on bark and rock.  
  Elix (1994h)  

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

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