Xuyên tâm liên
Xuyên tâm liên.  Ảnh: TL(SK&ĐS) - Còn có tên khác là cây công cộng, khổ đởm thảo, nhất kiến hỷ, là cây nhỏ sống 1 - 2 năm, mọc thẳng đứng, có thể cao đến 1m. Thân vuông, phân nhánh nhiều, các cành mọc theo 4 hướng. Lá mọc đối, có cuống ngắn, phiến lá hình trứng. Hoa nhỏ, màu trắng có điểm hường, mọc thành chùm ở nách lá hay ở ngọn cành. Quả nang dài. Hạt hình trụ, thuôn dài, màu nâu nhạt. Bộ phận dùng làm thuốc là phần trên mặt đất của cây thu hái vào đầu thu khi cây bắt đầu ra hoa, cắt ...
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4buVw6LDgeG7ueG6sHh04buVw6Lhu5d54bu1w6Lhuqrhu4/DgMOic8O0w4HhuqM4w6Lhu7jhu5PDompo4bqqw6LhuqjDgOG6quG7jXTDosOBaHPDonLGoeG7jXTDouG7teG7l3bGocOiceG7l8awYcOicsaww6Lhu5fhu7HGocOi4bqp4bql4buVYcOi4bu54bqwecOAw6LhuqvhuqXDomzhu7HDouG6puG6ssOpw6JsxILDouG6p8OicuG7m8OBw6HDolThu5XhurvhuqrDomvhuqJ04buVw6Lhuqst4bqnY+G7lcOi4bu54bqwecOAw6HDoy/hu7XEg8Oj4bu1w6JqcsOpQUEy4bq14bu1xKh1a+G6quG6tcSDxKjhurlqw6JB4buhw6Ij4buXw4DDoilodMOjL+G7tcSD