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 | ||
| Collema actinoptychum Nyl. | ||
| Bull. Soc. Linn. Normandie, sér. 2, 2: 43 (1868) T: Wagap, New Caledonia, Vieillard; lecto: H-NYL 41881, n.v., fide G.Degelius, Symb. Bot. Upsal. 20(2): 121 (1974). |
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| Thallus to 6 cm wide, adnate, membranous; ridges irregular, radiating, often anastomosing. Lobes broad, imbricate. Upper surface smooth or with small depressions, matt, olive-green; margin entire; isidia absent. Apothecia abundant, to 1.5 mm wide, laminal, sessile; base constricted; disc flat to slightly concave, red to dark red, grey-pruinose, pruina sometimes disappearing; thalline exciple thin, entire or finely crenulate, smooth or wrinkled, not prominent, persistent. Asci 65–95 × 15–20 µm. Ascospores 34–65 × 4–6 µm, fusiform, ends acute, sometimes one end extended, 6–10-celled, sometimes constricted. Pycnidia abundant, to 200 µm wide; pycnidial gel hyaline or yellow. Conidia 4–6 × 1 µm, slightly swollen towards ends. | ||
| A tropical species known from SE Asia, W Africa, northern Qld and Lord Howe Is. | ||
| Filson (1992d) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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