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药物简介茅膏菜又名地下明珠、露珠草,生于丘陵山坡,一年生宿根草本。高10～20厘米。叶互生,有长柄,叶片半月形或半圆形,宽约3厘米,边缘有长腺毛,能分泌粘液。夏季开花,为顶生总状花序,花柄纤细,长约5～10毫米,花萼长2～3毫米,秃净,有小缺刻或睫毛状,花瓣白色,长于萼片,花柱3枚。根部有小豌豆状球茎(所谓地下明珠),外皮黑色,内白色,药用球茎。据《广西本草选编》记载,本药治风湿关节痛,内伤胸痛,跌打损伤,瘰疬,角膜云翳,翼状胬肉,疥疮等。
Introduction to the drug Sundew, also known as the underground pearl, dewdrop grass, was born in hilly slopes, annual perennial herbs. 10 to 20 cm high. Leaves alternate, long-handled, leafy or semi-circular, ca. 3 cm wide, with long glandular hairs on the margins, secrete mucus. Summer flowering, terminal racemes, slender pedicel, ca. 5–10 mm, calyx ca. 2–3 mm, bald, small laciniate or mascara, petals white, longer than sepals, 3 styles. There are pea-like bulbs in the root (the so-called underground pearl), black skin, inner white, medicinal bulbs. According to “Guangxi Materia Medica Selected Readings”, this medicine treats rheumatism and arthralgia, internal injuries, chest pain, bruises, cramps, corneal cloud spasm, pterygium, acne and so on.