Lobelia, also known as: red hemp, wild hemp, tea flower.?　　Perennial herb, 1 to 2 meters high, the whole plant contains latex. Stem erect, glabrous. Leaves opposite, elliptic or oblong-lanceolate, 2 to 5 centimeters long, 0.5 to 1.5 centimeters wide, base rounded or cuneate, apex obtuse. With spiny tips prolonged by the midvein. Margin slightly revolute, smooth and glabrous; petiole short. Cymes borne on stem tip or branches; bracts small, membranous, lanceolate, apex pointed; calyx 5-lobed, lobes lanceolate or triangular-ovate, ca. 2 mm, shortly hairy: corolla pink or light purple, campanulate, proximally tubular, distally 5-lobed, corona 5 at base inside corolla; nectar glandular at margin of disk; stamens 5, anthers porosely lobed; pistil 1, stigma 2-lobed. Green. Follicles oblong-angular, yellow-brown with a purple halo when ripe, 10-15 cm long, 3-4 mm in diameter, dehiscing along the thick veins when ripe and dispersing seeds. Seeds numerous, yellow-brown, subdate-shaped, apically clustered with white fine long hairs. Flowering period June to July. Fruiting August to September (Northwest, Northeast).?　　It grows mainly in desert saline soils, riverbanks, ravines, and sandy slopes. Abundant in Xinjiang, in Liaoning, Jilin, Inner Mongolia, Gansu, Shaanxi, Shanxi, Shandong, Henan, Hebei, Jiangsu and northern Anhui and other places are also distributed, Henan is rare.