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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
Ramboldia blastidiata Kantvilas & Elix

Lichenologist 38: 137 (2007)

T: western slopes of Strzelecki Peaks, Flinders I., Tas., 27 Dec. 1997, G.Kantvilas 301/97; holo: HO; iso: BM.

  Thallus pale grey-green, olive-green to dull olive-brown, initially rimose-areolate, with the areolae plane to convex, c. 0.1–0.3 mm wide and to c. 0.35 mm thick, not delimited by a prothallus, soon becoming blastidiate, abraded and sorediate and forming a rather coarse cracked granular crust to 0.75 mm thick. Soralia pale green to pale fawn-brown, discrete and at first rather punctiform, becoming diffuse. Photobiont cells 6–18 µm wide. Apothecia round to irregularly rhomboidal, solitary or sometimes with adjacent ones fused,
0.2–1.0 mm wide, sessile; disc dull to bright red-brown or dark brown, basally constricted, but generally nestled among soredia and/or blastidia and appearing rather sunken, plane, undulate to ±convex, epruinose; margin very thin, concolorous with the disc or a little paler, usually becoming rapidly excluded. Exciple 20–60 µm thick, colourless to pale orange, K+ yellow → red. Epihymenium c. 10 µm thick, red-brown, K+ olive-brown. Hymenium 30–45 µm thick, colourless, K–. Hypothecium colourless, 70–140 µm thick, K–; subhypothecium to 40 µm thick, colourless, K+ yellow → red. Paraphyses sparingly branched and anastomosing,
1–2 µm thick; apices distinctly capitate, rounded, olive-brown (after the addition of K), 2–4 (–4.5) µm thick. Asci 28–40 × 12–17 µm. Ascospores ellipsoidal to fusiform-ellipsoidal, simple, occasionally with a plasma bridge and appearing spuriously septate, 8.5–12.0 × 3.5–5.5 µm. Pycnidia not seen.
CHEMISTRY: Thallus and subhypothecium K+ yellow → red, C–, P+ yellow; containing norstictic acid (major), connorstictic acid (minor or trace).
  Endemic and rare on wood, but relatively common on rocks, in open, rather exposed situations at lowland to alpine elevations, especially in dry-sclerophyll vegetation. Occurs in all States and the A.C.T.  
  Elix (2009e)  

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

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