Lichens (1985) - Flora of New Zealand Lichens
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Lecanora allanii Zahlbr.

L. (Placodium) allanii Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 346 (1941).

Lectotype: New Zealand. Wellington, Manawatu Gorge, on rocks submerged in flood periods. H.H. Allan W 59, CHR 345882!

Thallus to 2 mm thick, margins lobate, placodioid-radiating, ± subfoliose, pale glaucous-grey or olivaceous, matt, distinctly and minutely white-maculate (×10 lens), areolate-cracked, cracks deep, radiating, areolae angular, plane, rosette-forming to irregularly spreading (1-)2-6 cm diam. Apothecia innate to sessile, 1-2 per areole, 0.1-0.8 mm diam., subconcave to plane, disc dark red-brown, matt, epruinose, margins raised, entire, concolorous with thallus. Epithecium not granular. Hymenium colourless, 120-140 µm tall. Paraphyses simple, dense, 2 µm diam., not thickened at apices, moniliform towards apices. Asci clavate. Ascospores biseriate, subglobose to ellipsoid 10.2-12 × 7-8.3 µm. Chemistry: TLC nil.

N: Wellington, known only from the type collection.

Endemic

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