Abstract

The ethnobotanical utilization of five neglected herbaceous species, Argemone mexicana L., Heliotropium indicum L., Kedrostis foetidissima (Jacq.) Cogn., Peperomia pellucida (L.) Kunth and Schrankia leptocarpa DC. was investigated in Southern Benin to determine the ethnomedicinal and magic knowledge on them. Thirty-six herbal medicine traders were surveyed in six different markets in three districts. Four ethnobotanical indices were used. All informants traded A. mexicana and the majority traded H. indicum, K. foetidissima, and P. pellucida. Purchases in the traders’ own markets was the single most important source of H. indicum, A. mexicana and P. pellucida. A. mexicana was the most demanded by customers. Traders reported the scarcity of A. mexicana and H. indicum and the availability of S. leptocarpa, K. foetidissima and P. pellucida. H. indicum was mainly used to treat hypertension and fever. Similarly, S. leptocarpa was mostly mentioned in the treatment of hypertension and to facilitate childbirth. K. foetidissima mainly served religious and animist purposes. Similarly, P. pellucida was reported as being mainly used to implant a vodun, a traditional religion in West Africa. A. mexicana served to treat babies just after the umbilical cord fall as well as jaundice. S. leptocarpa and P. pellucida exhibited the highest Use Value (UV), and there was a very low similarity between study species in terms of uses. The majority of traders did not plant the study species, although they serve to treat various social conditions. We suggest a better management of H. indicum and S. leptocarpa through collection for trading and medicinal utilization while the planting is required for A. mexicana and P. pellucida because of their scarcity. K. foetidissima should be preserved and used as medicine wherever it occurs.

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