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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
Tephromela atra (Huds.) Hafellner

in K.Kalb, Lich. Neotrop. Exs. 8: [297] (1983)

Lichen ater Huds., Fl. Anglica 1: 445 (1762); — Lecanora atra (Huds.) Ach., Lichenogr. Universalis 344 (1810).

T: England, ‘Habitat in arboribus et muris frequens’ vide protologue [type probably burnt in 1783, fide H.Hertel, Willdenowia 6: 234 (1971) and J.R.Laundon, Lichenologist 11: 11 (1979)].


Thallus crustose, rimose to areolate, white, rarely pale grey, to 5 cm wide, 0.3–0.5 mm thick. Areolae angular to irregular, 0.5–1.5 mm wide, plane and smooth to weakly convex, lacking isidia and soredia. Prothallus black, prominent between the areolae and at the thallus margin, or not apparent. Apothecia common, scattered to crowded, sessile, ±constricted at the base, 0.8–2.0 mm wide; disc ±plane, undulate or convex, ±round, glossy black, epruinose; thalline exciple usually prominent, thin, persistent, smooth, rarely reduced or not developed; proper exciple colourless, 100–200 µm thick. Epihymenium dark violet-brown. Hymenium violet to violet-brown, 50–60 µm thick, not inspersed. Hypothecium brown to yellow-brown, 100–150 µm thick. Ascospores simple, ellipsoidal, thick-walled, 9–11 × 5.5–7.0 µm. Conidia filiform, straight, 12–24 × 1.0–1.5 µm.

CHEMISTRY: Cortex K+ yellow, C–, KC–, P– or P+ pale yellow; medulla K–, C–, KC+ pink, P–, UV+ blue-white; containing α-collatolic acid (major), atranorin (minor), 4-O-methylphysodic acid (minor or trace), alectoronic acid (minor or trace), ±physodic acid (trace), ±bourgeanic acid (minor).

  This cosmopolitan species occurs in upland areas of W.A., S.A., N.S.W., A.C.T., Vic. and Tas.; grows on rock and very rarely on wood or bark in temperate, subalpine and alpine habitats.  

  Elix (2009j)  

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

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