Paris in the spring: A review of the trade, conservation and opportunities in the shift from wild harvest to cultivation of Paris polyphylla (Trilliaceae)

Journal of Ethnopharmacology Volume 222, 10 August 2018, Pages 208-216 Journal of Ethnopharmacology Review Author links open overlay panelA.B.CunninghamabJ.A.BrinckmanncY.-F.BidgS.-J.PeibU.SchippmanneP.Luof a School of Life Sciences, University of KwaZulu-Natal, King Edward Avenue, Pietermaritzburg 3209, South Africa b Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Heilongtan, Kunming, Yunnan, China c Traditional Medicinals, 4515 Ross Road, Sebastopol, CA 95472, USA d Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, China e Bundesamt für Naturschutz (BfN), Konstantinstr. 110, Bonn 53179, Germany f Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9 Section 4, Renmin Nan Road, Chengdu, Sichuan, China g Yunnan Key Laboratory for Wild Plant Resources, Kunming, China Received 22 January 2018, Revised 30 April 2018, Accepted 30 April 2018, Available online 1 May 2018. crossmark-logo https://doi.org/10.1016/j.jep.2018.04.048 Get rights and content Abstract Ethnopharmacological relevance P. polyphylla Smith is used in traditional medicine in China, India and Nepal and is likely to be similarly used through most of its geographic range. China is at the centre of demand for P. polyphylla where it is used as an ingredient in several very successful Chinese medicinal herbal formulations. The Chinese e-commerce platform ‘alibaba.com’, for example, lists 97 P. polyphylla items offered by 46 Asian suppliers, of which 21 are situated in the Chinese mainland, 12 in Nepal, 7 in India, 2 in Pakistan, and 1 each in Bhutan, Hong Kong, Thailand, and Vietnam. Products offered include the crude drug (dried whole or cut rhizomes), extracts and formulations containing this herbal drug. Aims of the review The aims of this review were to assess the scale of the P. polyphylla trade, reviewing evidence on the impacts of wild harvest on P. polyphylla populations and on the role of cultivation as an alternative to wild harvest. Materials and methods Firstly, we reviewed published information on Paris population biology and studies on impacts of wild P. polyphylla harvest from across the geographic range of this species. Secondly, global trade data for P. polyphylla were analysed. Thirdly, we reviewed published information on P. polyphylla cultivation and made field visits to P. polyphylla cultivation areas in Yunnan and Sichuan. Results Since the 1980s, there has been a 400-fold increase in the market price paid in China for P. polyphylla rhizomes, from 2.7 Chinese Yuan (CNY) per kg in the 1980s to market prices up to 1100 CNY per kg in 2017. Cross-border trade in dried P. polyphylla rhizomes occurs at three different scales. Firstly, an internal, national trade of P. polyphylla rhizomes within countries (such as India, Nepal and China). Secondly, trade in P. polyphylla rhizomes from Nepal (and possibly from Bhutan) to the two range states that have the largest traditional medicine trade in the world: China and India. Thirdly, trade in processed herbal products. In China, for example, P. polyphylla is widely used as an ingredient in several very successful herbal products, including a famous first aid treatment to stop bleeding. Some of these products are exported globally, in addition to entering into regional trade. Trade data in our review shows that c. 800–1050 t of P. polyphylla rhizomes are sold annually, significantly more than recorded in earlier studies. China is the only country where P. polyphylla is cultivated on a significant scale, although small-scale cultivation is taking place in India and Nepal. Conclusions Based on the criteria for the inclusion of species in CITES Appendix II (Art. IV 2(a)), there is compelling evidence for adding Paris polyphylla. At the same time, cultivation of P. polyphylla outside of high conservation value habitats needs to be encouraged and supported. One way of doing this may be to develop separate, traceable supply chains for cultivated supplies in order to distinguish them from wild harvested stocks.