also known as purple brocade orchid, mussel flower, purple quince, purple orchid, red-faced generals, blood to see the sadness, mussel flower, mussel flower, clamshell flower,

is a kind of evergreen persistent herb in the genus of Purple-backed Vannia in the family of platypodophyllum. Leaves broad lanceolate, into a ring bearing on the short stem leaf surface smooth deep green, is a common indoor cultivated foliage plants. Prefer warm and humid climate, more with the division method of reproduction, can also have cuttings, sowing method. Native to Mexico and the West Indies, now widely cultivated.