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本品为木贼科(Equisetaceae)植物木贼草(Equiseium hiemale L.)的干燥地上部分。产于辽宁省清原、本溪、新宾、鳳城、宽甸、桓仁、海城等旦,以清原、本溪产量較多。在森林內或山溝等地成片生長。[植物形态] 多年生長綠草木。营养莖与繁殖莖同型,莖直立,單出或叢生,不分枝,高50—100厘米,直徑5—6毫米,深綠色,圓柱形,中空,表面有明显的节,具有縱溝和縱稜,稜約20余条左右,表面粗糙。叶生于节上,系由输生的鱗片狀叶連合而成,呈短筒狀或漏斗狀,先端具齿,質坚脆,齿片先端尖銳,易脫落,而遺留一平截狀基部。夏日莖端生孢子囊穗,呈長圓形,頂端有小凸突,初綠褐色,后变黄色。孢子叶特化成孢子囊托,如一盾狀体,平頂,六角形;頂的下面中央生一柄,周圍生有
This product is a dry aerial part of Equisetium plant Equisetium hiemale L.. It was produced in Qingyuan, Benxi, Xinbin, Fengcheng, Kuandian, Huanren, Haicheng, etc. in Liaoning Province, and produced more in Qingyuan and Benxi. Growing in the forest or in ravines and other places. [Plant form] Green grass grows for many years. Stems and stems of the same type, stems erect, single or clustered, unbranched, 50–100 cm tall, 5–6 mm in diameter, dark green, cylindrical, hollow, with obvious nodes on the surface, with longitudinal grooves and longitudinal Prism, about 20 or more edges, rough surface. The leaves are born in the section and are formed by the squamous leaves of the estuary. They are short cylindrical or funnel-shaped. The tips are toothed, they are brittle and the tips of the teeth are sharp and easy to fall off, leaving behind a flat base. In summer, the stems of the culm contain spores, which are oval in shape and have small bulges at the top. They are greenish brown in color and yellowish in color. The spore leaf is specialized into a sporangeal capsule, such as a peltate, flat top, hexagonal;