Xanthoparmelia dierythra (Hale) Hale
Phytologia 28(5): 487 (1974).
Basionym: Parmelia dierythra Hale, (1964) Keine Literatur in IF.
Synonyms: Index Fungorum
Type: xxx.
Thallus: adnate to loosely adnate, rather fragile, 4-8 cm broad, yellowish green; lobes subirregular, 1-2 mm wide, imbricate; upper surface continuous, emaculate, shiny, moderately to densely isidiate, the isidia cylindrical (Figure 14f), 0.07-0.12 mm in diameter, 0.1-0.3 mm high, the tips weakly epicorticate, darkening, simple to sparingly branched; medulla white; lower surface plane, pale brown, moderately rhizinate, the rhizines pale brown, simple or sparsely branched, 0.1-0.5 mm long. Pycnidia lacking. Apothecia rare, substipitate, 1-3 mm in diameter; spores 4-5 x 9-10 µm.
Photobiont: Trebouxia.
Chemistry: Norstictic acid, connorstictic acid, usnic acid (det. C. Culberson). Usnic acid, norstictic acid, connorstictic acid (Will-Wolf 1998: 332)
Ecology: on rock.
Molecular data: Genbank
Distribution: Database
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