The pinyin for pea is [wān dòu].

Pea is an annual climbing herb of the Fabaceae family, 0.5-2 meters tall. The whole plant is green, smooth and glabrous, powdery frosted. Leaves with 4-6 leaflets, stipules cordate, lower margin finely dentate. Leaflets ovoid; flowers solitary in leaf axils or several arranged in racemes; calyx campanulate, lobes lanceolate.

Native to the Mediterranean and Central Asia, it is one of the world's important cultivated crops. The seeds and young pods and seedlings are edible; the seeds contain starch and oil, which can be used medicinally, with strong, diuretic and anti-diarrhea effects; the stems and leaves can cool and relieve the summer heat, and are used as green manure, fodder or fuel.

Distribution:

China is mainly distributed in the central, northeastern and other areas. The main producing areas are Sichuan, Henan, Hubei, Jiangsu, Qinghai, Jiangxi and many other provinces and regions. Peas are native to the Mediterranean and Central Asia, mainly scattered in Asia and Europe.

Symptoms: mainly affecting leaves, stems and pods. Leaf infected with irregular lavender dots, high temperature and high humidity conditions, the rapid spread of disease spots, covered the entire leaf, after the diseased leaves become yellow and twisted and withered, some were dark brown irregular whorls of spots, the central necrosis produced black dots.

Baidu Encyclopedia - Pea