MICROSCOPIC FEATURES OF LADY'S THUMB (POLYGONUM PERSICARIA) AND POSSIBLE IMPURITIES

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DOI: https://doi.org/None
Issue: 
1
Year: 
2017

A.A. Maltseva (1), PhD; A.S. Chistyakova (1); Professor A.A. Sorokina (2), PhD; Professor A.I. Slivkin (1), PhD 1-Voronezh State University; 1, Universitetskaya Sq., Voronezh 394006, Russian Federation 2-I.M. Sechenov First Moscow State Medical University; 8, Trubetskaya St., Build. 2, Moscow 119991, Russian Federation

Introduction. Lady’s thumb (Polygonum persicaria) herb is used in medicine as a hemostatic and antihemorrhoidal agent. Its raw material is procured from wild plants. Along with lady’s thumb, there are other Polygonum species that can be mistakenly procured instead of the former. Objective: to comparatively investigate the anatomical structure of lady’s thumb and its impurity species. Material and methods. Samples of the dried herb of lady’s thumb, Polygonum minus, Polygonum lapathifolium, and Polygonum scabrum, which had been gathered in the Voronezh Region, were used. Their microscopic analysis was carried out in accordance with the methods described in the 13th Edition of the State Pharmacopoeia of the Russian Federation. Results. The anatomical features of the main morphological elements of the herb of lady’s thumb and its most closely related Polygonum species were investigated. The main distinctive features were revealed and the metrics of individual anatomical and diagnostic signs was identified. Conclusion. All the test Polygonum species have similar structure of the basic anatomical elements, but differ in their sizes. In addition, the lamina of Polygonum scabrium and Polygonum lapathifolium contains sharp-pointed hairs that are absent in the two other types.
Keywords: 
lady’s thumb
Polygonum persicaria L.
Polygonum scabrum Moench.
Polygonum minus Huds.
curltop ladyfly
Polygonum lapathifolium L.
microscopic analysis
diagnostic signs
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