Tacca ampliplacenta is a species of flowering plant in the yam family Dioscoreaceae, which is endemic to Yunnan, China.

[1][2] T. ampliplacenta is a perennial herb with a cylindrical rhizome.

The red-wine coloured flower stalks are axillary.

[2] The inflorescence is an umbel with up to 25 flowers, which have four involucral bracts.

[2] The flowers are triangular and greenish purple when young.