Tacca in Flora of China @ efloras.org

1. Tacca J. R. Forster & G. Forster, Char. Gen. Pl. 35. 1775.
[nom. cons.]

蒟蒻薯属 ju ruo shu shu

Leontopetaloides Boehmer, nom. rej.

Rhizomes cylindric to subcylindric or tubers globose to broadly ellipsoid-globose. Leaf blade entire or pinnately or palmately lobed, base not elongate, stomatal apparatus mostly axillocytic. Inflorescences terminal; involucral bracts 2--6(--12). Perianth campanulate, 6-lobed, persistent or soon deciduous. Ovary 1-loculed or imperfectly 4-loculed; placentas 3, parietal. Fruit a berry. Seeds reniform, ovoid, or ellipsoid, striate.

About 11 species: mainly in tropical Asia and Oceania; four species (one endemic, one introduced) in China.

Used medicinally and as a source of starch.

1 Leaf blade lobed; rootstock a globose to broadly ellipsoid-globose tuber 4 Tacca leontopetaloides

+ Leaf blade entire; rootstock a cylindric or subcylindric rhizome. (2)

2 (1) Inner 2 involucral bracts long petiolate 3 Tacca integrifolia

+ Inner 2 involucral bracts sessile. (3)

3 (2) Inner involucral bracts broadly ovate 1 Tacca chantrieri

+ Inner involucral bracts suborbicular-fan-shaped 2 Tacca subflabellata

Lower Taxa

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