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

13. Alpinia mesanthera Hayata, Icon. Pl. Formosan. 5: 225. 1915.

疏花山姜 shu hua shan jiang

Languas mesanthera (Hayata) Sasaki.

Pseudostems 1--2 m. Leaves sessile; ligule strigose abaxially and at margin, apex rounded; leaf blade linear-lanceolate, ca. 60 × 10 cm, glabrous except villous at margin, base cuneate, apex acuminate. Racemes erect, ca. 27 cm, lax; peduncle hirsute; bracteoles ca. 2.2 × 1.7 cm, split on 1 side, glabrous, apex 2- or 3-lobed. Pedicel held at right angle to rachis. Calyx cylindric, ca. 2 cm, split on 1 side, base shortly hirsute abaxially, apex 3-lobed, ciliate. Corolla tube cylindric, ca. 1.3 cm, abaxially glabrous; central lobe obovate, ca. 3 × 2.5 cm, apex emarginate or 2-cleft, ciliate; lateral lobes oblong-spatulate, narrower than central one. Lateral staminodes warty, hirsute. Labellum orbicular, ca. 3 cm in diam., margin denticulate, apex 2-cleft. Filament ca. 1 cm; anther obsagittate, ca. 1 cm. Ovary oblong, ca. 1.3 cm, densely villous. Fl. Jul.

* Taiwan.


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