What fruit is this loofah-like thing? What's the scientific name?
Luffa cylindrica annual climbing vine of Cucurbitaceae; Stems and branches rough, ribbed and puberulent. Tendrils slightly stout, pubescent, usually 2-4 forked. Petiole rough, subglabrous; Leaf blade triangular or suborbicular, usually palmately 5-7-lobed, lobes triangular, dark green above, rough, warty, light green below, pubescent, palmately veined, with white pubescence. Monoecious. Male flowers are usually 15-20 flowers, which are born in the upper part of racemes; Stamens are usually 5, slightly closed at the beginning of flowering and finally completely separated.