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Wen's Keys | Family List | Zingiberaceae

Alpinia Roxburgh

Rhizome: creeping

Leaf: shape: oblong, lanceolate

Bracts or bracteoles: bracts each subtending a flower or a cincinnus of 2 to many flowers, bracteoles absent, bracteoles tubular

Inflorescence: panicle, raceme, covered by 1-3 spatulate involucral bracts, lax, dense, terminal

Calyx: tubular, split on 1 side

Corolla lobes: central lobe erect,hooded or concave, central lobe longer and wider than lateral lobes

Labellum: entire, apex lobed or cleft or concave or emarginate, larger or longer than corolla lobes

Stamens or staminodes: lateral staminode toothlike or subulate, lateral staminodes adnate to labellum and forming a 3-lobed labellum, lateral staminode absent or very short

Filament: present, short or absent

Connective: forming a reflexed crest

Ovary: 3-loculed, placentation axile

Style: stylodes massive

Stigma: well expanded, clavate, genulate

Fruit: globose, dehiscent, indehiscent

Seed: angled, arillate


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