Hypotrachyna monilifera (Kurok.) Hale

Hypotrachyna monilifera

Parmelia monilifera Kurokawa in Hale and Kurokawa, 1964:182. [Type collection: La Aguada, Mérida, Venezuela, Mägdefrau 651 (M, holotype; US, isotype).]

Thallus loosely adnate on bark, 10–15 cm broad, whitish mineral gray; lobes linear-divaricate, 2–6 mm wide; upper surface plane, continuous; lower surface densely rhizinate, the rhizines moderately branched, conspicuously moniliform-segmented, projecting as a mat beyond the lobe margins. Apothecia not present.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C+ orange, P− (atranorin, barbatic acid, 4-O-demethylbarbatic acid, possibly traces of obtusatic and norobtusatic acids).

DISTRIBUTION.—Venezuela.

HABITAT.—On bark of small trees in lower paramo region at about 2800 m elevation.