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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
Siphulastrum mamillatum (Hook.f. & Taylor) D.J.Galloway
  New Zealand J. Bot. 21: 197 (1983)
Lecidea mamillata Hook.f. & Taylor, London J. Bot. 3: 637 (1844); Parmeliella mamillata (Hook.f. & Taylor) Zahlbr., Cat. Lich. Univ. 3: 212 (1925). T: Falkland Is., J.D.Hooker; lecto: BM, fide D.J.Galloway loc. cit.; isolecto: FH.
  Thallus minutely foliose-squamulose, densely caespitose in small, flattened mats, to 8 cm wide. Squamules at first 1–3 mm wide, soon becoming nodular-papillate, 2–10 mm tall, terete, subdichotomously branched, corticate, very closely crowded; tips of finger-like laciniae expanded and blackened; margins crenate and ±densely pruinose, yellowish brown. Apothecia to 1.5 mm wide, often confluent, sessile or immersed in surrounding crust of laciniae; disc flat at first with a pale proper exciple, soon becoming convex and immarginate, shining, brownish black. Ascospores ellipsoidal to ovoid, 10–14 × 7–9 µm. CHEMISTRY: argopsin ±triterpenoids.
  Amongst mosses on ±acidic soil, more rarely on rocks and in buttongrass moorland in alpine and subalpine vegetation in Tas. Widespread in Subantarctic regions (incl. Heard Is. and Macquarie Is.) and in southern New Zealand.  
  Jørgensen & Galloway (1992a)  

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

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