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General Description

Monoecious and male. Tuber subglobose, 1.5-2.5 cm in diameter. Cataphylls 3-5, green, inter 8-25 cm long. Leaves 1-2. Petiole green to purplish, unmarked, 11-35 cm long, 4/5 of the length sheathing in flowering plants, not sheathing in nutritive plants. Leaf blade pedate, leaflets 5-11, green above, glaucous beneath, oblong lanceolate, obovate-lanceolate, acuminate, base cuneate, sessile, central one largest, 9-12 cm long, 3-5 cm wide, outer (lateral leaflets) gradually decreasing to the outermost. Peduncle emerging from leaf-sheath, green, 15-30 cm long. Spathe smallest in the genus, 2.5-6 cm long in total; spate tube yellowish green, ovoid to globes, 1-1.5 cm long, 1-1.4 cm wide, constricted at dark purple throat; limb oblong-ovate, yellow or green, accumulate, inside dark purple at least as basal part, slightly incurved. 1.5-4.5 cm long, 0.8-2 cm wide. Spadix bisexual and male, very short 1-2 cm long in total. Basal part female portion, ovaries greenish congested, obovate, stigma sessile, discoid male portion continued cylindric 3-7 cm long, 2-3 mm thick, light yellow, male flowers congested, synandria usually composed of 2, anthers, anthers 2-loculed, sessile dehiscent by apical pore; appendix very short, yellowish or yellow green, rugose when dry, short ellipsoid, 2-51.5 mm. Mature infructescence erect, subglobose, 4 cm in diameter; berries obovate, seeds 3, pale yellowish, 2-2.5 mm long.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Wen, Jun

Source: Plants of Tibet

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