Department of the Environment and Water Resources home page

About us | Contact us | Publications | What's new

Header imagesHeader imagesHeader images

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
Peltigera lairdii C.W.Dodge & E.D.Rudolph

Ann. Missouri Bot. Gard. 42: 138 (1955)

T: Macquarie Is., on soil over decaying grasses, mosses and hepatics, N.R.Laird 4 A.N.A.R.E.; holo: n.v.

  Thallus irregularly spreading, to 6 cm wide, fragile when dry. Lobes plane to concave, sublinear, irregularly branched, often crowded and overlapping, to 3 cm long, 4–15 mm wide; margins upturned, entire to irregularly notched, the apices ±inrolled. Upper surface grey-brown to olive-brown or reddish brown when dry; margins darker grey-brown and ±glossy, longitudinally wrinkled or bullate, occasionally cracked, tomentose or becoming smooth and dull. Tomentum ±thick at the apices, becoming thinner on the upper surface, or absent. Lower surface white or pale buff. Veins anastomosing, pale buff at margins, becoming dark brown centrally, slightly raised, c. 0.5 mm wide, flattened arachnoid-tomentose; interstices broadly polygonal, with a woolly-arachnoid tomentum. Rhizines pale buff to dark brown, simple to confluent and ±tufted, to 5 mm long, covered with fine tomentum at the margins, becoming fasciculate centrally, often matted and tangled, with or without a small apical tuft. Apothecia on elongate slightly upturned lobes, saddle-shaped, to 4 mm wide; disc dark red-brown; margin pale, lacerate, occasionally with small phyllidium-like outgrowths. Ascospores acicular, 5–7-septate, 48–65 × 2.5–3.0 (–4.0) µm, hyaline. Pycnidia not seen in Australian specimens.
CHEMISTRY: Faint traces of two unidentified substances with high Rf (c. 80 and 85).
  Uncommon in Vic. and Tas., on soil and rocks in wet-sclerophyll forest and rainforest, often growing over mosses, at altitudes of 170–1270 m. Previously known with certainty only from Subantarctic Macquarie Is. where it was reported as being common on soil over decaying grasses, mosses and hepatics (Dodge & Rudolph, 1955).  
  Louwhoff (2009b)  

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

This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from Australian Biological Resources Study. Requests and inquiries concerning reproduction and rights should be addressed in the first instance to Dr P. McCarthy. These pages may not be displayed on, or downloaded to, any other server without the express permission of ABRS.

Top | About us | Advanced search | Contact us | Information services | Publications | Site index | What's new