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FOC | Family List | FOC Vol. 24 | Zingiberaceae | Alpinia

20. Alpinia uraiensis Hayata, Icon. Pl. Formosan. 5: 224. 1915.

大花山姜 da hua shan jiang

Languas uraiensis (Hayata) Sasaki.

Pseudostems more than 2 m. Leaves sessile; ligule oblong-triangular, 1--1.5 cm × ca. 6 mm, abaxially hirsute, apex obtuse; leaf blade linear-lanceolate, ca. 1 m × 13 cm, glabrous, base and apex acuminate. Racemes erect, flowering part ca. 25 cm, densely flowered; rachis densely strigose-tomentose, many grooved; bracts reddish purple at apex, linear, ca. 2.5 cm × 4--5 mm, glabrous; bracteoles orbicular, ca. 5.5 cm, glabrous except strigose at base abaxially. Pedicel ca. 3 mm, moderately stout, densely tomentose. Calyx nearly white, campanulate-cylindric, ca. 3.5 × 2 cm, deeply split on 1 side, abaxially sparsely hirsute, apex finely 6-toothed. Corolla tube ca. 1.3 cm, abaxially sparsely hirsute or subglabrous; central lobe obovate-oblong, ca. 3.5 × 2.8 cm. Lateral staminodes linear, ca. 2 mm. Labellum yellow with reddish center, with radiate stripes on distal middle part disappearing at margin, oblong-triangular, ca. 5 × 4 cm, apex 2-cleft; lobes 6--7 mm, with small warts, base densely villous. Filament ca. 1 cm; anther ca. 1.8 cm. Ovary globose. Style apex cupular. Capsule pale scarlet, globose, ca. 2.5 cm in diam., densely hairy. Fl. Apr--May.

* Taiwan.


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