Pork.

Northerners call water spinach cabbage because they think it looks round and bulging and is particularly delicious. The scientific name of water spinach is water spinach, also known as Tongcai Tengcai, Tongcai Tingcai, Tengcai, Tongcai. It is a plant of the Ipomoea genus Photocalyx group.

This species is native to East Asia and is now widely cultivated as a vegetable, or sometimes grows wild. It is commonly cultivated in Fujian, Guangxi, Guizhou, Jiangsu, Sichuan, Guangdong and other provinces in central and southern China. It is less common in the north. It is suitable to grow in places with warm and humid climate and fertile and humid soil. It is not cold-tolerant and the stems and leaves will die when exposed to frost. Distributed throughout tropical Asia, Africa and Oceania.

Morphological characteristics

The shape and size of the leaves vary, ovate, long-ovate, long-ovate-lanceolate or lanceolate, 3.5-17 cm long, 0.9-wide 8.5 cm, apex sharp or acuminate, with a small short tip, base heart-shaped, halberd-shaped or arrow-shaped, occasionally truncate, entire or wavy, or sometimes with a few coarse teeth at the base, nearly hairless or occasionally hairy on both sides Sparsely pubescent; petioles 3-14 cm long, glabrous.

Cymes axillary peduncle 1.5-9 cm long, base puberulent, upward glabrous, with 1-3 (-5) flowers; bracts are small scale-like, 1.5-2 mm long Pedicel 1.5-5 cm long, hairless; sepals nearly equal in length, ovate, 7-8 mm long, apex blunt, with a short pointed tip, outer surface hairless; corolla white, light red or purple, funnel-shaped , 3.5-5 cm long; stamens unequal in length, base of filaments hairy; ovary conical, glabrous.