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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
Collema japonicum (Müll. Arg.) Hue
  Nouv. Arch. Mus. Hist. Nat. sér. 3, 10: 220 (1898)
Synechoblastus japonicus Müll. Arg., Flora 63: 17 (1880). T: south-west Japan, Dickins 1876; lecto: G, fide G.Degelius, Symb. Bot. Upsal. 20(2): 126 (1974).
  Thallus to 10 cm wide, foliose, membranous, rounded to irregular, adnate or ascending, sometimes deeply and broadly lobate, smooth or sparsely ridged, matt or partly glossy, olive-green; isidia if present sparse, marginal or at damaged spots, often globose becoming squamiform. Lobes few, rounded or ±extended, imbricate, sometimes lobulate; margin entire or sparsely incised. Apothecia scattered to crowded, to 2 mm wide, sessile or with constricted base; disc flat, matt or slightly glossy, epruinose, pale or dark red; thalline exciple thin, entire, smooth or finely rugulose, usually not prominent. Asci 65–80 × 13–20 µm. Ascospores 30–56 × 4.0–8.5 µm, fusiform to broadly acicular, straight or somewhat curved, rarely crooked at one end, sometimes end-cells tail-like, 6-celled, rarely 4- or 7–8-celled, usually not constricted. Pycnidia common, to 200 µm wide; pycnidial gel hyaline to pale yellow. Conidia c. 4 × 1 µm, straight, usually slightly swollen towards ends.
  Occurs in Asia, the Pacific Islands, New Zealand and northern Australia (Qld). Grows on bark.  
  Filson (1992d)  

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

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