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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 coccophorum Tuck.
  Proc. Amer. Acad. Arts 5: 385 (1862)
T: Rio Grande, Texas, U.S.A., Wright; lecto: FH, n.v., fide G.Degelius, Symb. Bot. Upsal. 13: 184 (1954). *****Collema atrum F.Wilson, J. Linn. Soc., Bot. 28: 355 (1891). T: Warrnambool, Vic., Nov. 1886, F.R.M.Wilson; holo: MEL. *****Collema congestum F.Wilson, loc. cit. (1891). T: Warrnambool, Vic., Nov. 1885, F.R.M.Wilson; holo: MEL.
  Thallus small, dull, epruinose, dark olive-green to blackish green. Lobes 0.5–3 mm wide, distinctly radiating, irregular, imbricate or discrete. Upper surface smooth to densely verrucose, centre of thallus often covered with short isidia-like lobules. Apothecia numerous if present, 1–2.5 mm wide, sessile or appressed; disc flat to convex, epruinose, light to dark red; thalline exciple thin, entire, somewhat prominent, sometimes disappearing. Asci 60–70 × 15–20 µm. Ascospores 13–26 × 4.5–9 µm, ellipsoidal oblong, straight, rarely curved, ends acute or obtuse, 2-celled (rarely 3–4-celled), not constricted at septum. Pycnidia to 260 µm wide, marginal; pycnidial gel hyaline. Conidia 4.5–6 µm long, straight or slightly curved, slightly swollen towards ends.
  This species is found on limestone and granite rock and soils in W.A., N.T., S.A., N.S.W., Vic. and Tas. It also occurs in Europe, U.S.A. and New Zealand.  
  Filson (1992d)  

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

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