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 | ||
| Umbilicaria nylanderiana (Zahlbr.) H.Magn. | ||
Lich. Sel. Scand. Exs. [252] (1937) Gyrophora nylanderiana A.Zahlbr., Cat. Lich. Univ. 4: 720 (1927). T: U.S.A.; holo: n.v. [Umbilicaria hyperborea auct. non (Ach.) Hoffm.: A.J.Blackman, G.C.Bratt & J.A.Cashin, Lichenologist 6: 113 (1974)] [Umbilicaria proboscidea auct. non (L.) Schrad.: G.A.Llano, Monogr. Lich. Fam. Umbilicariaceae 162 (1950)] |
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| Thallus 3–5 (–15) cm wide, mainly monophyllous, thin, crisp, fragile, brittle when dry; margins irregularly incised, becoming ragged, torn and often fenestrate. Upper surface unevenly ridged, folded, puckered, warty to verruculose, dull greyish brown to brown-black, commonly white-pruinose centrally, with an irregular pattern of radiating ±sharp-edged ridges around the central umbo. Isidia and soredia absent. Lower surface dull pale brown to grey-brown, mainly smooth, uniformly or patchily covered with black sooty thalloconidia; rhizinomorphs absent. Thalloconidia single-celled, brown, ±globose, 5.0–8.5 (–10) µm wide. Apothecia frequent, 0.5–1.2 mm diam., sessile to substipitate; disc gyrose, plane to convex, black. Ascospores simple, ellipsoidal to oblong-ellipsoidal, 9–14 (–16) × 5–8 µm, hyaline. Pycnidia marginal and laminal, visible as minute glossy black dots. Conidia fusiform (2.5–) 3–4 × 0.8–1.3 µm. CHEMISTRY: Medulla K–, C+ red, KC+ red, P–; containing gyrophoric acid (major), umbilicaric acid (minor or trace), lecanoric acid (minor or trace). |
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| Occurs on subalpine and alpine rocks in N.S.W., A.C.T., Vic. and Tas.. Common on mountains and boreal regions of the Northern Hemisphere; also in New Zealand, South America and Antarctica. | ||
| Louwhoff (2009c) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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