Hypotrachyna neodissecta (Hale) Hale

Hypotrachyna neodissecta

Parmelia neodissecta Hale, 1971c:94. [Type collection: 6 km SE of Zouépo, N’Zérékoré, Guinea, Santesson 10597d (UPS, holotype; US, isotype).]

Thallus loosely attached, rather fragile, pale greenish ashy gray, 3–7 cm broad; lobes sublinear to subirregular, in part subascending, becoming subcaniculate, 1–3 mm wide; upper surface shiny, continuous, becoming densely isidiate, isidia cylindrical, mostly simple; lower surface densely rhizinate, the rhizines moderately dichotomously branched. Apothecia adnate, the amphithecium isidiate, 2–3 mm in diameter; spores not found (in African material, 6μ–8μ × 12μ–14μ).

CHEMISTRY.—Cortex K+ yellow, medulla K−, P−, C+ red (atranorin and gyrophoric acid).

DISTRIBUTION.—Venezuela, Africa, and India.

HABITAT.—On trees in secondary forest at 2000–2200 m elevation.