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[Identification on crude drugs from genus Leonurus: II. Leaf and flower surface characters]
1Faculty of Pharmacognosy, Shanghai University of Traditional Chinese Medicine, Shanghai 200032.
Abstract
Objective:
To identify the crude drugs originated from 9 species and 1 variety of genus Leonurus (called Yimucao) through leaf and flower surface characters.
Method:
Routine slide processing and the characters under microscope were observed and compared.
Results:
Obvious characteristics for identification were revealed.
Conclusion:
The shape and length of non-glandular hairs are useful in identifying this sort of crude drugs. Leaf constants and cluster crystals are also useful as reference. However, pollen grains and secretory tissues are worthless.