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1·Leaves diffuse along the stem or subrosulate, oblanceolate, cuspidate, 3 – 6 x 1 – 2,4 cm, 6 - 8 mm thick, green, margin red.

叶沿茎松散生长或成半莲座型，叶倒披针形，骤尖，3 - 6厘米长1 - 2，4厘米宽，6 - 8毫米厚，绿色，叶缘红。

2·Leaves obovate-spatulate, cuspidate, 1,5 – 3 x 0,8 – 2,5 cm wide at the widest part, glaucous bluish-grey, often red-flecked beneath, margins reddish.

叶：倒卵状匙形，尖，1.5 - 3厘米长，0.8 - 2.5厘米宽（在最宽的部分），叶为带有白霜的蓝灰色，叶背面常有红色斑点，叶缘红色。

3·Objective:To study the influence of temperature and alcohol concentration on extraction efficiency on extraction anthraquinone glycoside from polygonum cuspidate.

目的：研究提取温度和提取液乙醇浓度对从虎杖中提取蒽醌苷的影响。