Hypotrachyna degelii

Hypotrachyna degelii

Parmelia degelii Hale in Hale and Kurokawa, 1964:170. [Type collection: Angola, Mexico, Degelius (Degelius herbarium, holotype; US, isotype).]

Thallus rather closely adnate, coriaceous, tannish mineral gray in the herbarium, 4–8 cm broad; lobes short, crowded, sublinear, 1–2.5 mm wide; upper surface plane to rugulose, shiny, faintly white-maculate, lacking soredia and isidia; lower surface moderately rhizinate. Apothecia common, adnate to substipitate, 3–8 mm in diameter, the amphithecium white-maculate, incised; spores 4μ–5μ × 8μ–11μ.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C−, KC+ rose, P− (atranorin, alectoronic acid, and α-collatolic acid).

DISTRIBUTION.—Colombia, Peru, Brazil, and Africa.

HABITAT.—On trees, rarely rocks, in open forest at 1000–3500 m elevation.