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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
Umbilicaria cylindrica (L.) Delise ex Duby

Bot. Gall. 2(2): 595 (1830)

Lichen cylindricus L., Sp. Pl. 1144 (1753).

T: in rupibus ad flumen kamajock prope Quickjock Lapponiae Lulensis, Sweden, 1871, P.J.Hellbom & E.V.M.Hellbom; neo: UPS n.v.

Umbilicaria cylindrica f. jubata F.Wilson, Pap. & Proc. Roy. Soc. Tasmania 1892: 178 (1893). T: Mt Wellington, Tas., F.R.M.Wilson s.n.; holo: not located.

  Thallus 2–10 cm wide, monophyllous or polyphyllous, coriaceous, rigid; lobes orbicular to irregular, entire or rather ragged, occasionally fenestrate. Upper surface dull, dark brown to dark grey to black, often completely grey-pruinose, smooth or slightly rugulose, occasionally becoming obscurely wrinkled and areolate-scabrid, occasionally with erect branched rhizinomorphs. Isidia and soredia absent. Lower surface typically beige-brown or pinkish, more rarely grey, often darker grey-brown towards the margins, blackened towards the umbilicus, mostly smooth but occasionally weakly areolate in older blacker central areas, occasionally creased. Rhizinomorphs usually abundant, marginal and laminal on the upper and lower surfaces, 1–4 mm long, usually ±plane at their point of attachment, then cylindrical and gradually tapering to an acute apex, rarely simple, more commonly sparsely to richly furcate, mostly black or ±concolorous with the thallus, smooth and glossy, or occasionally with knob-like projections (see remarks on thalloconidia below); thallyles uncommon. Umbilicus small, compact. Apothecia numerous, marginal or scattered over entire upper surface, (0.5–) 1–3 (–4) mm diam., substipitate; stipe concolorous with the upper surface; disc black, at first plane, becoming convex, round to irregular, gyrose; gyrae thin to moderately coarse, often forming a horseshoe pattern. Ascospores simple, ellipsoidal to oblong-ellipsoidal, rarely somewhat reniform, colourless, (8.5–) 12.0–15.5 (–18.0) × (3.5–) 5–9 µm. Pycnidia scattered, immersed, visible as black dots on the upper surface. Conidia bacilliform to fusiform, 3–4 × 0.5–0.7 µm.
CHEMISTRY: Medulla K+ red or K–, C–, KC–, P+ orange or P–; containing traces of lecanoric acid and gyrophoric acid, detected by HPLC only (Narui et al., 1996). Hestmark (2004) reported norstictic acid as a secondary metabolite.
  Common on basalt and granite above 1000 m in N.S.W., A.C.T., Vic. and Tas. Also in North America, northern Eurasia, the Himalayas and New Zealand.  
  Louwhoff (2009c)  

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

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