Hypotrachyna boquetensis (Hale) Hale

Hypotrachyna boquetensis

Parmelia boquetensis Hale, 1974b:265. [Type collection: Boquete, Chiriquí, Panama, Hale 38878 (US).]

Thallus closely adnate on branches, 8–12 cm broad, greenish ashy gray; lobes subirregular, 3–4 mm wide, the margins toward the center becoming lobulate; upper surface smooth, cracked with age and with conspicuous marginal pycnidia; lower surface black, sparsely to moderately rhizinate. Apothecia common, adnate, 2–3 mm in diameter; spores 6μ × 12μ.

CHEMISTRY.—Cortex K+ yellow, medulla K+ red, P+ orange (atranorin and salazinic acid).

DISTRIBUTION.—Panama.

HABITAT.—On trunks and branches of hardwood trees in open pastures at about 1500 m elevation.