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 | ||
| Pseudocyphellaria pickeringii (Tuck.) D.J.Galloway | ||
| Bull. Brit. Mus. (Nat. Hist.), Bot. 17: 218 (1988); Sticta pickeringii Tuck., in C.Wilkes, U.S. Expl. Exped., Bot. 17: 138 (1862). T: Bay of Islands, North Auckland, New Zealand, Wilkes Expedition; holo: FH. ***** Sticta flavissima var. simulans Müll.Arg., Bull. Herb. Boissier 4: 89 (1896). T: Qld, s. loc., F.M.Bailey 49; lecto: G 002011, fide D.J.Galloway, Bull. Brit. Mus. (Nat. Hist.), Bot. 17: 218 (1988); syn: G 002012, 002014, 002015. | ||
| Thallus rosette-forming to irregularly spreading, loosely to closely attached centrally, 5–10 (–20) cm wide. Lobes very variable, ±rounded to ragged-incised to complexly divided, to 2 cm long, 0.5–1.5 cm wide; lobe margins entire to notched or incised, becoming richly phyllidiate. Upper surface pale yellow-green to tawny when dry, emerald-green to glaucous green when wet, convex-undulate, shallowly wrinkled or pitted to ±faveolate in parts, matt or glossy, smooth or minutely scabrid-areolate in parts; lacking maculae, pseudocyphellae and soredia. Isidia mainly marginal then spreading to upper surface, minute, terete, becoming flattened-coralloid, phyllidiate. Phyllidia flattened, 0.2–3 mm tall; upper surface convex; lower surface pale yellow; margins ridged, with scattered minute yellow pseudocyphellae. Medulla yellow. Photobiont green. Lower surface yellow-white, glabrous at margins to dark red-brown and tomentose centrally. Pseudocyphellae scattered, fleck-like, yellow. Apothecia uncommon, sessile, 0.2–5 mm diam.; disc pale to dark red-brown; exciple pale whitish buff, coarsely verrucose-areolate; epithecium red-brown, K–; hymenium colourless; hypothecium red-brown or pale brick-red, K+ blue-green (deeper layers staining most strongly); zone near hymenium brownish yellow. Ascospores fusiform-ellipsoidal, 1–3 (–5)-septate, 25–32 × 6–7 µm, colourless. CHEMISTRY: Pulvinic acid, pulvinic dilactone, calycin, 2α,3β,22α-triacetoxystictane, 2α,3β-diacetoxystictane-22-ol, stictane-3β,22α-diol, 2β-acetoxystictane-3β,22α-diol, 3β-acetoxy-stictane-2α,22α-diol, stictane-2α,3β,22α-triol, 3β-acetoxystictane-22-ol, pseudocyphellarin A, isopseudocyphellarin A, nephroarctin, phenarctin, 2'-O-methylphenarctin, 1'-chloro-phenarctin, 2'-O-methylpseudocyphellarin A and 2'-O-methylisopseudocyphellarin A. |  |
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| Occurs in eastern Qld and eastern N.S.W. and in Lord Howe Is. and Norfolk Is.; grows on rock faces, living and dead wood, tree stumps and shrubs in open woodland and rainforest. Also in New Zealand and throughout the Palaeotropics. | ||
| Galloway et al. (2001) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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