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 | ||
| Xanthoparmelia subcrustacea (Gyeln.) Hale | ||
| Mycotaxon 20: 79 (1984). Based on Parmelia conspersa var. stenophylloides Müll.Arg., Hedwigia 31: 193 (1892); Parmelia subcrustacea Gyeln., Ann. Hist.-Nat. Mus. Natl Hung. 29: 30 (1935). T: Everard Ranges, S.A., June 1891, R.Helms 95; lecto: G, fide M.E.Hale, Smithsonian Contr. Bot. 74: 199 (1990). | ||
| Thallus small-foliose to subcrustose, tightly adnate, to 3–4 cm wide. Lobes not imbricate, flat, subirregular to sublinear-elongate, irregularly branched, 0.5–1 (–1.5) mm wide; apices ±rotund. Upper surface yellow-green, darkening with age, shiny or dull, emaculate, lacking isidia and soredia; older lobes irregularly fractured and areolae extensively formed; areolae 0.2–1 mm wide; lobe margins commonly black, particularly towards apices. Medulla white. Lower surface pale brown, often somewhat darker to smoky-grey near lobe apices; rhizines moderately dense, simple, brown. Apothecia sessile, 1–1.5 mm wide; disc concave, black-brown; thalline exciple entire, involute, becoming undulating. Ascospores 6–9.5 × 4.5–6 µm. Pycnidia common. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then pale red, C-, P-; containing usnic acid, hypostictic acid, hyposalazinic acid, ±hypoconstictic acid and ±constipatic acid. | ||
| Uncommon, endemic, tightly adnate to rock in drier areas of southern and central Australia (W.A., N.T., S.A., N.S.W., A.C.T. and Vic.). | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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