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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
Phyllopsora africana Timdal & Krog

Mycotaxon 77: 64 (2001)

T: where road meets track, along road towards Plaine d’Affouches, above Bras Citron, La Réunion, 20°57’S, 55°25’E, 1996, H.Krog & E.Timdal RE8/13; holo: O; iso: UPS.

  Thallus squamulose, effuse. Prothallus well developed, red-brown. Squamules 0.1–0.4 mm wide, adnate to ascending, isodiametric to somewhat elongate, scattered when young, later occasionally imbricate or contiguous, crenulate to incised, plane to weakly convex, green, glabrous on the upper surface, usually faintly pubescent along the margins. Isidia common, on the margins of squamules, often long, simple to sparingly branched. Upper cortex of type 1–2, 30–50 μm thick. Apothecia common, 0.5–1.5 mm wide, rounded when immature, later irregular in outline, simple to conglomerate, plane to strongly convex, pale to mid-brown, with an indistinct concolorous or darker glabrous margin. Proper exciple pale brown to colourless or with patches of reddish brown pigment. Hypothecium colourless. Ascospores simple, ellipsoidal, 5.5–8.5 × 2.0–2.5 μm. Pycnidia not seen.
CHEMISTRY: Cortex and medulla K–, C–, P+ orange; containing chlorophyllopsorin (major), argopsin (minor).
  Known from north-eastern Qld; rare on the bark of trees in strand vegetation and hinterland rainforest. Also in East Africa and the Mascarene Islands.  
  Elix (2009h)  

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

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