In present study, the electivity index was used to estimate the preference for species selection of Chinese medicinal seed plants based on the code database of Chinese herbal medicine, CHM-DATA Ver. 1.0 (Zhang, 2017a-d) and the world's seed plant data. The results showed that people consciously select Chinese medicinal seed plants from the families Polygonaceae and Ranunculaceae, followed by Liliaceae, Solanaceae, Umbelliferae, etc., and people avoid select medicinal seed plant species from Cyperaceae and Gramineae, followed by Euphorbiaceae, Leguminosae, Compositae, Cruciferae, Rubiaceae, Convolvulaceae, Orchidaceae, Polygonaceae, Scrophulariaceae, Dianthus, Malvaceae, and Rosaceae, etc.
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