1) Genus apios 2) Herbs trailing or climbing 3) Rosid dicot genus 
Apios is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. Its member species are found in North America and Asia between latitudes of 50° and 20°. The term `Apios` comes from the Greek word for `pear` and may refer the pear shape of some tubers. Several members of this genus are known to have...
Apios is a genus of leguminous climbing plants, producing edible tubers on underground shoots. An American species (Apios tuberosa) has been used as a substitute for the potato, but its tubers, though numerous, are small.
[n] - twining perennial North American plants
genus Apios noun twining perennial North American plants