Rhododendron paniculatum

Rhododendron paniculatum

(drug records of Nanning City)

[synonyms] lanhuacao, shuiyuanzhi (Nanning medical records), daodancao, laosheyao (Guizhou medical plant catalogue).

[source] it is the whole plant of pterygopanax glabra of Scrophulariaceae.

[plant morphology] pterygoid calyx

Herbs annual, prostrate or scattered. The stem is weak, tetragonal, rooting on nodes, many branched, bald or tender, and the petiole is sparse hairy. Leaves opposite, petiolate; leaf blade ovate, 2-3 cm long, apex acute, base broadly cuneate, margin obtusely serrate. Flowers usually in axils near apex; petioles stout, longer than leaves. The duration of fruiting is 2 times longer than that of leaves; the calyx is 10-12 mm long, 5-winged, and the duration of fruiting can reach 2 cm; the Corolla is purple blue, about 2 cm long, with 2-lobed upper lip and 3-lobed lower lip; the stamens are 4, and the anthers stick in pairs. Capsule, enclosed in persistent calyx. The flowering period is summer and autumn.

On wet grass. It is distributed in the south of China.

[collection] harvested in summer and autumn, usually fresh.

[nature and taste] Nanning medical records: "sweet, cool, non-toxic. "

Functions and indications: clearing away heat and dampness, detoxifying and removing blood stasis. Treatment of heat cough, jaundice, diarrhea, poison, injury.

① "Nanning drug records": "cool and detoxify, stop bleeding and relieve pain. Treatment of snakebite, dysentery. "

② Guizhou medicine and plant Catalogue: "clearing away heat and toxin, promoting diuresis, relieving cough and removing blood stasis. Treatment of jaundice, blood drenching, wind heat, cough, diarrhea, poisoning, injury. "

[usage and dosage] oral administration: decoction, 0.3-1 Liang. External use: tamping.