White gun barrel

White gun barrel

(folk herbs of Science)

Synonym: Rhizoma Dioscoreae (Yunnan).

[source] it is the root bark of Aquilariae.

[plant morphology] White Spear

Semi deciduous trees, up to 10 m high. Branchlets tetragonal, densely yellowish brown tomentose or smooth. Leaflets 9-15, lanceolate to oblong, 3-15 cm long, 1.5-5 cm wide, apex obtuse or acute, base obliquely cuneate, entire, both sides densely covered with villi, lateral veins 5-11 pairs; total petiole densely covered with white villi, with obvious narrow wings between petiole and petiole. Flowers green white, integrated into a large panicle, inflorescence densely tomentose; bracts narrowly lanceolate; calyx campanulate, 4-lobed, densely bearded; petals 4, narrow, 3 mm long, glabrous; stamens 2, filaments short, anthers long elliptic; ovary 2-locular, covered with fine soft hairs, style smooth, stigma 2-lobed. Samara flat spoon shaped, sparsely short hairy, 3.5-4 cm long, with long wings at the top. The flowering period is May. The fruit period is from October to November.

It grows in high mountains and mixed forests. It is distributed in Yunnan.

[chemical constituents] the bark contains tannin, tannin, resin, sugar, fat, etc. Most of the bark of Fraxinus plants contain coumarins.

[nature and taste] Wenshan Chinese herbal medicine: "bitter and astringent, cold. "

[function indications] Wenshan Chinese herbal medicine: "clearing away heat, diuresis and defecation. Treatment of cystitis, bladder stones, adverse urination, constipation, malaria, high fever, epistaxis. "

[usage and dosage] oral administration: decoction, 3-5 yuan (0.5-1 Liang fresh).