Pitcairnia xanthocalyx Mart.

Pitcairnia xanthocalyx Mart. Hort. Monac. Sem. 1848: 4 1848; Linnaea 24: 195. 1851.
Pitcairnia sidphurea "Andr." K. Koch, Ind. Sem. Hort. Berol. 1857: App. 5. 1858. Not P. stil-
phurea Andr. 1802. Pitcairnia flavescensBake^r.'Bot.'^la.z. pi. 6318. 1877. Not P. /onescras K. Koch, 1858.
Stemless, up to 13 dm. high; leaves all alike, 1 m. long or more, entire or very sparsely and minutely spinose, scarcely petiolate; sheaths suborbicular, small, brown, prominently nerved, covered with a membrane of scale; blades linear or linear-lanceolate, filiform-acuminate, 2-3 cm. wide, glabrous above, covered beneath with a membrane of whitish scales; scape erect, up to 7 mm. in diameter, slightly fioccose; scape-bracts erect, subfoliaceous, all exceeding the internodes; inflorescence simple, laxly polystichous-flowered, 3-6 dm. long, soon glabrous; floral bracts linear-lanceolate, the lower ones much exceeding the pedicels; pedicels slender, 15-20 mm. long; flowers spreading; sepals subtriangular, broadly acute or obtuse, 15-20 mm. long, orange, often floccose-lepidote at the apex; petals 45-50 mm. long, appendaged, pale-yellow; ovary half superior; o^'ules long-caudate.
Type locality: Mexico. Distribution; Hidalgo.

Pitcairnia xanthocalyx is a plant species in the genus Pitcairnia. This species is endemic to Mexico.