Sister tree

Sister tree

(selected Chinese herbal medicines from Simao, Yunnan)

[synonym] jiachadong (Dai name).

[source] the bark or leaves of sister trees of Bignoniaceae.

Sister tree

Erect trees. The bark is corky. Leaves opposite, 2-3 pinnate compound, leaflets dentate when young, usually entire. Panicles many flowered, terminal on drooping branches; calyx small, campanulate, cleft teeth 5, inconspicuous; corolla white, tube very long, slender, lobes 5, ovate, nearly equal, slightly valvate; stamens 4, 2 long, 2 short, inserted below throat, short prominent; ovary subsessile, ovule sequence. Capsule linear, compressed, membranous. Seeds discoid, broadly winged.

Wild or cultivated.

[collection] all year round.

[chemical constituents] the fresh leaves contain baicalein and ragweed. The flower contains baicalein, baicalein-5-galactoside and a small amount of ragweed. In addition, there is no baicalein-5-galactoside but baicalein glucuronide in flowers. The epicarp of the pod contains acetyloleanolic acid and the pod flesh contains ragweed. Heartwood contains sitosterol.

[nature and taste] selected Chinese herbal medicines of Simao in Yunnan Province: "cool in nature, bitter in taste. "

[functions and indications] selected Chinese herbal medicines of Simao in Yunnan: "dispelling wind and relieving itching, expelling insects and detoxification, relieving cough and eliminating phlegm. Treatment of urticaria, eczema and various skin allergies, Ascaris, cough, phlegm and asthma. "

[usage and dosage] oral: decoction, 3-5 yuan. External use: wash with boiling water.