Archiphysalis Kuang Manoelia Bowdich Opsago Raf. Physaliastrum Makino Physaloides Moench Withania is a genus of flowering plants in the nightshade family, Solanaceae, with 23 species that are native to parts of North Africa, the Middle East, the Mediterranean, and the Canary Islands. Two of the species, W. somnifera (Ashwagandha) and W. coagulans ...