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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 leptaleum Tuck.
  Proc. Amer. Acad. Arts 6: 263 (1866)
T: White Mountains, U.S.A., 1852, E.Tuckerman: lecto: FH (herb.Tuckerman), n.v., fide G.Degelius, Symb. Bot. Upsal. 20(2): 101 (1974). *****Collema gwytheri Bailey, Queensland. Agric. J. 5: 484 (1899). T: near Warwick, Qld, G.Gwyther 380; holo: GLAM.
  Thallus to 5 cm wide, crustose to subfoliose, membranous, smooth to irregularly rugose, sometimes fenestrate, matt or glossy, rarely with small isidia-like nodules, olive-green, sometimes bluish green or yellowish brown; margin often finely lobulate; lobules 1–2 mm broad, short, narrow, imbricate or not, flat or caniculate. Apothecia scattered to dense, 1–1.5 mm wide, appressed to sessile with constricted base, sometimes pedicellate; disc flat, matt or glossy, epruinose, pale red to dark red; thalline exciple thin to moderately thick, entire, smooth to rugose, usually not prominent, persistent, sometimes disappearing. Asci 40–65 × 10.5–20 µm. Ascospores 26–50 × 1.5–5 µm, linear-oblong, straight or curved, narrowing towards one or both ends, 4-celled, not constricted at septa. Pycnidia common, to 170 µm wide, laminal and marginal; pycnidial gel hyaline to pale yellow. Conidia 3.5–5 × 1–1.5 µm, straight, slightly swollen towards ends.
  Widely distributed throughout tropical and temperate regions, but rare in 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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