Hypotrachyna endochlora (Leight.) Hale

Hypotrachyna endochlora

Parmelia endochlora Leighton, 1871:140. [Type collection: Askew Wood, Kerry, Ireland, Taylor (BM, lectotype).]

Parmelia millaniana Stirton, 1874:79. [Type collection: Loch Long, Argyleshire, Scotland, Macmillan (BM, lectotype).]

Parmelia xanthomyela Nylander, 1874:306. [Type collection: Fontainebleau, France, Nylander (H, lectotype).]

Parmelia pittieri Müller Argau in Durand and Pittier, 1891: 53. [Type collection: Rancho Rotundo, Costa Rica, Pittier 5050 (G, lectotype).]

Parmelia madagascariensis Vainio, 1898: (33). [Type collection: Tanala, Ambohimitombo, Madagascar, Forsyth 562 (TUR, lectotype; BM, isolectotype).]

Parmelia xanthomyela f. sorediosa Hue, 1899:146. [Type collection: Mafate, Bourbon, Rodriguez (P, lectotype).]

Parmelia endochlora f. sorediosa (Hue) Zahlbruckner, 1929:166.

Parmelia gallicana Gyelnik, 1931:288. [Type collection: Based on Parmelia xanthomyela f. sorediosa Hue).]

Thallus loosely adnate, greenish mineral gray, 8–13 cm broad; lobes sublinear, margins sometimes dissected with age, 2–6 mm wide; upper surface shiny, plane, continuous, faintly to strongly white-maculate, pustulate, the pustules mainly subterminal, soon turning granular-sorediate; medulla pale cendre green; lower surface moderately to densely rhizinate, the rhizines densely dichotomously branched. Apothecia rare, adnate, 4–14 mm in diameter; spores 9μ–14μ × 18μ–22μ.

CHEMISTRY.—Cortex K+ yellow, medulla K−, C+ orange, P− (atranorin, barbatic acid, obtusatic acid, norobtusatic acid, entothein, undetermined pigments, rarely echinocarpic acid).

DISTRIBUTION.—Mexico, Central America, Colombia, Venezuela, Brazil, western Europe, South Africa, Madagascar, St. Helena, Hawaii.

HABITAT.—On trees, rarely rocks, and over mosses in mature forests, primary cloud forest, and scrubby areas at 1700–3500 m elevation.