Xanthoparmelia harrisii Hale
Mycotaxon 34(2): 547 (1989).
Synonyms: Index Fungorum
Type: xxx.
Thallus: foliose, tightly adnate, light yellow green at the tips but darkening to blackish brown at the center, 1-2 cm broad; lobes sublinear, 0.5-1 mm wide, convex, little branched, separate to contiguous; upper surface continuous, emaculate, dull and light pruinose, sparsely to densely isidiate, the isidia coarse, cylindrical ( Figure 15f), 0.1-0.2 mm in diameter, to 2 mm high, the tips syncorticate, dark, becoming richly branched; medulla white; lower surface plane, pale brown, sparsely rhizinate, the rhizines short, coarse, 0.1-0.2 mm long, unbranched. Pycnidia and apothecia lacking.
Photobiont: Trebouxia.
Chemistry: Hypostictic acid, hyposalazinic acid, hypoconstictic acid, caperatic acid (+/-), usnic acid, associated undetermined spots.
Ecology: On quartz pebbles.
Molecular data: Genbank
Distribution: Database
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