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FOC | Family List | FOC Vol. 24 | Zingiberaceae

14. Boesenbergia Kuntze, Revis. Gen. Pl. 2: 685. 1891.

凹唇姜属 ao chun jiang shu

Gastrochilus Wallich, Pl. Asiat. Rar. 1: 22. 1829, not D. Don (1825).

Rhizomes tuberous or elongate. Leaves basal or cauline, petiolate; ligule 2-lobed; leaf blade ovate, oblong, or lanceolate. Inflorescences terminal on pseudostems or on separate shoots arising from rhizomes; bracts 2-ranked, apical one developing first, each subtending 1 bracteole and 1 flower. Calyx tubular. Corolla tube exserted from calyx, slender; lobes subequal. Lateral staminodes petaloid, usually wider than corolla lobes. Labellum obovate or broadly oblong, larger than corolla lobes and lateral staminodes, strongly concave, base narrow, grooved, margin crisped, apex entire or 2-cleft. Filament erect; anther locules parallel, dehiscing by slits or apical pores, base without spur; connective with or without appendage. Ovary 3-loculed or incompletely so; placentation basal or axile. Capsule oblong, 3-valved. Seeds black; aril laciniate.

About 50 species: tropical Asia; three species (one endemic) in China.

1 Inflorescences on separate shoots arising from rhizomes; leaf blade cordate at base   1 Boesenbergia longiflora
+ Inflorescences terminal on pseudostems, appearing from within apical leaf sheaths; leaf blade rounded to cuneate at base.   (2)
2 (1) Leaves 3 or 4, green on both surfaces; anther connective appendage 2-cleft, 1--3 mm   2 Boesenbergia rotunda
+ Leaves 1--3, usually 1, adaxially dark green, abaxially purplish red; anther connective appendage absent   3 Boesenbergia albomaculata

Lower Taxa


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