American groundnut, Apios americana, photo by Robin Buell

Jerusalem artichoke, Helianthus tuberosus, photo by Chenxin Li

Common bean, Phaseolus vulgaris, photo by Chenxin Li

Catharanthus roseus flower, photo by Chenxin Li

Nasturtium, Tropaeolum majus, flower

Photo by Chenxin Li

Foxglove, Digitalis purpurea, photo by Chenxin Li

Dahlia, photo by Chenxin Li

Camptotheca accuminata, photo by Chenxin Li

Potato, Solanum tuberosum, flowers, photo by Brieanne

Camptotheca accuminata, photo by Chenxin Li