Harmless to the body. Luffa vine is not poisonous and can be used as a cigarette. After tasting it, it feels very spicy and my throat is uncomfortable. But it does feel like a cigarette.

0.8- 1.3cm long and 0.4-0.7cm wide, with yellow-white villous inside and 3-5 protruding veins outside, stamens 5, sparse 3, filaments 6-8mm, slightly close at the beginning of flower opening, and finally completely separated; Female flowers are solitary, with pedicels 2-10 cm long; Perianth is the same as male flower, staminodes 3, ovary long and cylindrical, pilose.

Luffa: an annual climbing herb. The stems and branches are rough, furrowed and puberulent. Stems must be stout, usually 2-4 branches. Leaves alternate; Petiole is rough, long 10- 12cm, nearly hairless; Leaf blade is triangular or nearly round, with both length and width of 10- 12cm, usually palmately 5-7-lobed, with triangular lobes, long in the middle, 8- 12cm in length, sharp washing end, serrated edge, deep heart-shaped base and dark green upper surface.

There are wart spots, light green below, pubescent, palmately veined and white villous. Flowers unisexual, monoecious; Male flowers usually 10-20 are born at the top of the raceme, and the peduncle is stout, with a length of 12- 14cm and a pedicel length of 2 cm. Calyx tube campanulate, pubescent; Corolla yellow, amplitude, 5-9cm in diameter after opening, 5 lobes, oblong.