Hypotrachyna velloziae (Vain.) Hale

Hypotrachyna velloziae

Parmelia velloziae Vainio, 1890:64. [Type collection: Carassa, Minas Gerais, Brazil, Vainio 1455 (TUR, Vainio herbarium number 2892, lectotype; BM, FH, M, UPS, isolectotypes).]

Thallus closely adnate to bark, fragile, pale viridine yellow, 3–7 cm in diameter; lobes sublinear, dichotomously branched, 0.5–2 mm wide; upper surface plane, continuous, sorediate, the soralia mostly laminal, capitate, often coalescing; medulla turning yellow-ochre under the soralia;

lower surface moderately rhizinate, the rhizines sparsely dichotomously branched. Apothecia not seen.

CHEMISTRY.—Cortex K−, medulla K−, P+ orange-red (usnic acid, protocetraric acid, and rhodophyscin).

DISTRIBUTION.—West Indies and Brazil.

HABITAT.—On trunk of trees (Pinus) in open or virgin pine forests (West Indies) at 1200–1600 m elevation.