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 | ||
| Verrucaria cootapatambensis P.M.McCarthy | ||
| Lichenologist 34: 207 (2002). T: tributary of Swampy Plain R., 150 m E of L. Cootapatamba, Mount Kosciuszko National Park, New South Wales, 36°28.1'S, 148°16.0'E, alt. 2060 m, on small sandstone boulder in snow-melt creek, 14 January 2002, P.M.McCarthy 1801; holo: CANB. | ||
| Thallus crustose, epilithic, effuse to determinate, to 3 cm wide, dull greenish or greyish black, ±smooth, sparingly to richly and delicately rimose, not areolate except around some perithecia, 20–40(–50) µm thick, becoming greener, gelatinous and ±continuous when wetted. Cortex apparently lacking or consisting of dark, globose, thick-walled cells 3–5(–7) µm diam.; these sometimes also clustered within the thallus. Algae irregularly massed, green to greenish orange, vertically oriented and broadly ellipsoid or globose, 5–9(–11) × 4–8 µm. Mycobiont cells hyphal and 2–3 µm wide or paraplectenchymatous and 4–5 × 2–3 µm. Prothallus not apparent; black basal layer absent. Perithecia numerous, semi-immersed to almost superficial, convex, hemispherical, subconical or subglobose, usually with a 10–15 µm thick covering of thallus over the lower half. Perithecial apex rounded, truncate or subacute. Ostiole inconspicuous or in a shallow, c. 20 µm diam. depression. Involucrellum dull black and minutely uneven in surface view, olive-black in thin section, extending down to excipulum-base level, arching slightly away from the excipulum or ±contiguous with it, (0.19–)0.26(–0.33) mm diam. [n = 60], dense and 30–60 µm thick near the apex, more diffuse and 40–80 µm thick at the base; space between involucrellum and excipulum often containing rock crystals. Centrum globose to depressed-ovate, 0.12–0.18 mm diam. Excipulum dark greenish brown near the apex, at the sides and base with a hyaline inner layer and a pale to medium greenish brown outer layer, 15–20 µm thick. Periphyses 15–20 × 1.5–2 µm, simple to sparingly branched; apices neither rounded nor pointed. Paraphyses absent. Hymenial gel Lugol's I+ red-brown. Asci 8-spored, clavate to cylindroclavate, 42–52(–60) × 14–20 µm. Ascospores simple, hyaline, ellipsoid, obovate or subglobose, massed or irregularly biseriate in the ascus, (8.5–)11(–14) × (6–)7.5(–9.5) µm [n = 100]; contents usually finely granulose and frequently guttulate. Conidiomata not seen. |  |
|
| Known only from the type locality in alpine N.S.W. | ||
| McCarthy (2002) | ||
| 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.