Hypotrachyna lineariloba (Kurok.) Hale

Hypotrachyna lineariloba

Parmelia lineariloba Kurokawa in Hale and Kurokawa, 1964: 180. [Type collection: Alto de la Bandera, La Vega, Dominican Republic, Wetmore 3475 (MSC, holotype; US, isotype).]

Thallus loosely attached to bark, rather fragile, ashy white, 3–6 cm broad; lobes elongate, linear, dichotomously branched, subdivaricate, 0.5–2 mm wide; upper surface plane, shiny, continuous, lacking soredia and isidia; lower surface moderately rhizinate, the rhizines about 1 mm long, sparsely dichotomously branched. Apothecia not seen.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C−, KC+ rose, P− (atranorin and alectoronic acid).

DISTRIBUTION.—Dominican Republic.

HABITAT.—On trunks of Pinus in open forests on ridges at 2400–2800 m elevation.