Pseudoparmelia scrobicularis

Pseudoparmelia scrobicularis

Pseudoparmelia scrobicularis (Krempelhuber) Hale, 1974:191.

Parmelia scrobicularis Krempelhuber, 1873:10 [type collection: Lagoa Santa, Brazil, Warming (M, lectotype)].

Parmelia longiconida Lynge, 1914:130 [type collection: Rio Apa, Colonia Risso, Paraguay, Malme 1949 (S, lectotype: LD, US, W, isolectotypes)].

DESCRIPTION.—Thallus closely adnate on bark, light buff mineral gray, 2–5 cm broad; lobes sub-linear, contiguous, 1.0–1.5 mm wide; upper surface finely foveolate, dull to shiny, lower surface black, moderately rhizinate. Apothecia common, adnate, 1.5–2.5 mm in diameter, the disc white pruinose; spores 8, 6–7 × 10–12 μm.

CHEMISTRY.—Cortex K+ yellow, medulla K+ yellow, C−, KC−, P+ orange; atranorin, stictic acid, and constictic acid.

DISTRIBUTION.—South America.

HABITAT.—On trees in open or secondary forest.