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14. Taccaceae Dumortier

蒟蒻薯科 ju ruo shu ke

Authors: Chih-chi Ting & Kai Larsen

Herbs perennial. Rhizomes cylindric to subcylindric or tubers globose to broadly ellipsoid-globose. Leaves radical; petiole erect, base sheathing; leaf blade entire to deeply lobed at margin. Flowering stem often a long scape. Inflorescences umbels; involucral bracts (2--)4--6(--12), in 2 whorls, elongate or broad. Flowers bisexual, actinomorphic; bracteoles linear, narrower than bracts. Perianth tube adnate to ovary, 6-lobed; lobes in 2 whorls, petaloid. Stamens 6, inserted on perianth lobes; filaments short, apex hooded or spatulate; anthers 2-loculed, introrse. Ovary inferior; ovules many, anatropous. Style short; stigma 3-lobed, usually petaloid, curved over style. Fruit a berry or rarely a 3-valved capsule. Seeds many; endosperm abundant; embryo small.

Two genera and ca. 13 species: pantropical; two genera and six species (two endemic, one introduced) in China.

Ling Ping-ping. 1985. Taccaceae. In: Pei Chien & Ting Chih-tsun, eds., Fl. Reipubl. Popularis Sin. 16(1): 42--54.

1 Fruit a berry; leaf blade 20--55(--60) × 7--21(--25) cm, base not elongate, stomatal apparatus mostly axillocytic   1 Tacca
+ Fruit a capsule; leaf blade 10--15(--25) × 4--6(--8) cm, base elongate, stomatal apparatus mostly anomocytic   2 Schizocapsa

Lower Taxa


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