Wild yam, whose botanical name is Dioscorea villosa, is a tuberous vine (and not a root, as it is normally thought) that grows in wet and humid regions. It can be found growing in thickets all over ...

More than 20 rice, wheat and yam plants have been listed as threatened on the latest version of the IUCN's Red list. The wild plants are being squeezed out by intensive farming, deforestation and ...