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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
Steinia australis Kantvilas & P.M.McCarthy
  Lichenologist 31: 556 (1999). T: Native Plains Rd, c. 4 km SW of Sassafras, Tas., 41°19’S, 146°28’E, 7 Oct. 1998, G.Kantvilas 193/98; holo: HO.  
  Thallus scurfy, leprose, pale green to greyish green, thin, rather patchy, not delimited; photobiont cells ±globose, 12–20 µm diam. Apothecia matt, scattered, solitary, superficial or slightly embedded in the substratum, 0.20–0.35 mm diam., to c. 0.25 mm tall; disc uneven, minutely roughened, plane at first, soon becoming strongly convex, finally eroding and leaving only the excavate black dish-like excipulum; margin not distinct. Excipulum well developed, cupular, opaque black-brown, pigment unchanged in KOH and HNO3, 60–80 µm thick beneath the hymenium, thinner and becoming excluded laterally. Hypothecium 70–90 µm thick, pale yellow-brown to hyaline. Hymenium 80–100 µm thick, diffuse yellow-brown in the upper part, elsewhere hyaline. Paraphyses 0.5–1.0 µm thick. Asci narrowly cylindrical, 80–100 × 14–20 µm. Ascospores globose or almost so, frequently deformed and angular in the ascus, 8–12 × 7–11 µm, typically with a large central vacuole; wall 0.5–1.0 µm thick. Pycnidia not seen.
  Known only from the type locality in northern Tas.; collected on relatively freshly disturbed, unconsolidated, basaltic soil along a roadside at the boundary of open eucalypt forest and improved pasture at an altitude of 70 m.  
  Kantvilas (2004a)  

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

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