Fern root

Fern root

(pharmacology of traditional Chinese Medicine)

[source] it is the rhizome and leaf of Dryopteris stenopteris.

[plant morphology] Dryopteris angustifolia, also known as Pteris semipinnata.

Perennial herbs, 40-80 cm high. Rhizome massive, erect. Petiole 10-20 cm long, straw color, covered with large scales; scales reddish brown, 8-13 mm long; linear lanceolate, long elliptic lanceolate or broadly ovate, apex long acuminate. The leaf blade is oblong to needlelike oblong, 30-60 cm long, 20-30 cm wide, and slightly narrow at the lower part; there are 4-16 pairs of non sporangia pinnae, oblong to oblong lanceolate, with short stalks; the pinnules are linear lanceolate, slightly falcate, apex acute or obtuse, base short There are 5-9 pairs of pinnae of the sporangium group, which are compact. There are 1-3 pairs of sporangium groups on each lobe, with a cap of sporangium group.

Born in bushes or under forests. Distributed in Shandong, Zhejiang, Jiangxi, Hubei, Shaanxi, Sichuan, Yunnan, Guangxi and other places.

[chemical composition] it contains mianmaric acid, etc.

[functions and indications] ① pharmacology of traditional Chinese medicine: "it's an anthelmintic drug for cestodes. It can be a substitute for Mianma. "

② "Guangxi medical plant directory": "Ye: treating Dieda. Rhizome: cure dysentery. "

[usage and dosage] oral administration: decocted soup, 1.5-2.5 preserved fruit or ground powder.