New distribution records of four species of crop wild relatives to India

Abstract

A field survey across various parts of India coupled with an analysis of the literature and an examination of herbarium specimens revealed the presence of four species of crop wild relatives that have not been reported from India, viz., Dioscorea piscatorum Prain & Burkill (from Little & Great Nicobar), Fagopyrum gracilipes (Hemsl.) Dammer ex Diels (from Arunachal Pradesh), Rubus praecox Bertol. (from Jammu & Kashmir), and Ziziphus subquinquenervia Miq. (from Great Nicobar). While Rubus praecox is naturalised in the Kashmir Valley, Dioscorea piscatorum and Ziziphus subquinquenervia were found truly wild, and Fagopyrum gracilipes occurs as a weed in buckwheat fields and orchards. Ziziphus subquinquenervia has been resurrected from the allied Z. elegans Wall. of peninsular Malaysia and Singapore owing to the distinct diagnostic characters. Their description, phenology, habitat, and other field observations have been highlighted here.

Keywords

• crop wild relatives
• dioscorea piscatorum
• fagopyrum gracilipes
• india
• new distribution
• rubus praecox
• ziziphus subquinquenervia