Xanthoparmelia sorediata (Elix & P. Child) O. Blanco, A. Crespo, Elix & Lumbsch
in Blanco et al., Taxon 53, 4: 971 (2004).
Basionym: Chondropsis sorediata Elix & P. Child, Brunonia 9: 113 (1986) "New Zealand. Otago. Scattered on soil amongst sparse grasses, old terrace just below Victoria Bridge, Waitiri, Kawarau Gorge, 290 m. Peter Child 2328 pr.p., 1.v.1985; CHR - holotype".
Synonyms: Index Fungorum
Type: New Zealand, Otago, scattered on soil amongst sparse grasses, old terrace just below Victoria Bridge, Waitiri, Kawarau Gorge, 290 m, 1.5.1985, P. Child 2328 pr.p. (CHR - holotype).
Thallus: foliose, loose on soil, pale yellow to pale yellow-green, becoming pale olive-green with age, forming rosettes 1 - 2 cm in diameter (wet), these contracting into convex clumps when dry, 0.5 - 1.0 cm in diameter; lobes linear-elongate, 1.0 - 2.0 mm wide, dichotomously branched, separate, not at all imbricate, apices rounded, curling inwards when dry, the thallus becoming subspherical with the underside of the lobes outermost. Uppersurface often shiny, smooth, weakly maculate, sorediate, the apices (and rarely the margins) of the lobes becoming swollen and developing terminal, sublabriform soralia, the soredia farinose; medulla white; lower surface rarely shallowly caniculate in part, pale yellow to dull buff, minutely wrinkled, erhizinate. Apothecia very rare, sessile to substipitate, 0.5 - 2.0 mm in diameter, disc shallowly concave, reddish brown, amphithecium smooth or becoming sorediate, margin thick and prominent, crenulate or minutely fissured, ultimately sorediate, concolorous with the thallus; spores (8), colourless, ellipsoid, 5-6 / 2.5 µm (may be immature) (Elix & Child 1986: 113).
Photobiont: Trebouxia.
Chemistry: Cortex K-, medulla+ pale brown, C-, P+ orange-red; usnic acid, fumarprotocetraric acid, succinprotocetraric acid, protocetraric acid (+ trace) (Elix & Child 1986: 113).
Ecology: Restricted to cooler, subalpine semi-arid lands. Growing loose on soil, forming rosettes when moist, but contract into convex clumps when dry (Elix & Child 1986: 113).
Molecular data: Genbank
Distribution: Database
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