(records of yam planting in Tianmu, Zhejiang)
[source] it is the root bark of Cryptomeria fortunei.
[plant morphology] Cryptomeria fortunei, also known as Cryptomeria longifolia.
Evergreen large trees, up to 60 meters high. The trunk is straight, the branches are erect or upward, and the branchlets are drooping. The leaves are spirally inserted, slightly arranged in 5 rows, subulate, oblate on both sides, 1.2-2 cm long, slightly curved inward, often spreading at the base, and the leaves at the base of branchlets are smaller, only 4-6 mm long. Monoecious; male strobils oblong, solitary leaf axils, stamens spirally inserted, filaments very short, anthers triangular round; female strobils solitary at the top of branches, subglobose, often with 2 ovules per scale, bract scales connate with scale, only apex separated. Cones subglobose, 1.2-2 cm in diameter; seed scales about 20,? - shaped, woody, upper part thick, apex with 5-s sharp teeth, dorsal surface with a triangular protuberance (the apex of bract scales), each scale has 2 seeds. Seeds slightly flat, with narrow wings around. The flowering period is from March to April. The fruit period is from October to November.
Like light, like warm and humid climate and acid soil. Distributed in Zhejiang, Fujian, Jiangxi and other places. It is cultivated in Henan, the lower reaches of the Yangtze River, Guangdong and Guangxi.
[chemical constituents] Cryptomeria fortunei contains 0.12% Platycladus biflavonoids. The same genus Cryptomeria fortunei contains volatile oil, which contains δ - picolinol, β - eucalyptol, isocryptomeric acid, isocryptomeric acid, cryptomeric acid and shandaheikonol.
The resin of Cunninghamia lanceolata contains phenolic diterpene, which is called Cunninghamia lanceolata lipol.
The leaves of Cunninghamia lanceolata contain biflavonoids such as cryptomerin a, cryptomerin B, Torreya grandis biflavonoids, Pinus koraiensis biflavonoids and fargesene.
[function and indications] Zhejiang Tianmu yam plant records: "treatment of tinea. Fresh root bark of Cryptomeria fortunei (to embolus) half a catty. Pound fine, add salt one or two, boiling water, wash the affected area. "
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