Remototrachyna rhabdiformis (Kurok.) Divakar & A. Crespo

Hypotrachyna rhabdiformis

Parmelia rhabdiformis Kurokawa in Hale and Kurokawa, 1964:183. [Type collection: El Boquete, Chiriquí, Panama, Maxon 5128a (US, holotype).]

Thallus adnate, light tannish mineral gray, 5–8 cm broad; lobes sublinear, short, imbricate, 2–6 mm wide; upper surface plane, continuous, moderately isidiate, the isidia mostly simple and cylindrical, to 0.5 mm high or more, becoming club-shaped or lobulate; lower surface densely rhizinate, the rhizines densely dichotomously branched. Apothecia adnate, 1–5 mm in diameter, the amphithecium isidiate; spores 6μ–8μ × 15μ–21μ.

CHEMISTRY.—Cortex K+ yellow, medulla K+ yellow turning red, C−, P+ orange (atranorin, norstictic acid, and in Iltis 3005 and Wurdack 483 a trace of stictic acid).

DISTRIBUTION.—Panama and Peru, Southeast Asia.

HABITAT.—On trees or on soil in cloud forest at 1300–2300 m elevation.