Remototrachyna koyaensis (Asahina) Divakar & A. Crespo

Hypotrachyna koyaensis

Parmelia koyaensis Asahina, 1953:67. [Type collection: Mt. Koya, Kishu, Japan, Asahina 52101 (TNS, lectotype).]

Thallus adnate, membranaceous, ashy white, up to 10 cm broad; lobes irregular, subrotund apically, with crenate margins, 4–10 mm wide; upper surface plane, continuous, moderately isidiate, the isidia simple to rarely branching, cylindrical; lower surface black but with a narrow brown zone at the margins, moderately rhizinate, the rhizines moderately dichotomously branched. Apothecia rare, stipitate, 1–3 mm in diameter; spores 8μ × 16μ.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C−, P+ orange-red (atranorin, protocetraric acid, and an unidentified fatty acid).

DISTRIBUTION.—Japan, Southeast Asia, Mexico.

HABITAT.—On trees (Pinus) at 2100 m elevation.