Hypotrachyna Lichen

Hypotrachyna ensifolia

Parmelia ensifolia Kurokawa in Hale and Kurokawa, 1964:172. [Type collection: Alto de la Bandera, La Vega, Dominican Republic, Imshaug 23430 (MSC, holotype; US, isotype).]

Parmelia lobulifera var. insensitiva Degelius, 1941:63. [Type collection: Forney Ridge, Swain County, North Carolina, Degelius (Degelius herbarium, lectotype).]

Thallus adnate, whitish mineral gray, 5–11 cm broad; lobes sublinear, dichotomously branched, 1–5 mm wide; upper surface shiny, continuous, becoming densely isidiate-lobulate on the surface and along the margins, the lobules up to 1.5 mm long, often ciliate; lower surface moderately rhizinate, the rhizines densely dichotomously branched. Apothecia rare, adnate, 3–4 mm in diameter; spores 8μ–10μ × 14μ–18μ.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C−, KC+ rose, P− (atranorin, alectoronic acid, and α-collatolic acid or with α-collatolic present in trace amounts or lacking).

DISTRIBUTION.—Costa Rica, Panama, West Indies, Colombia, Venezuela, and New Zealand.

HABITAT.—On trees or boulders in cloud forest or on soil banks at 2000–3700 m elevation.