Fig. 769: Bidens mitis: a, habit, x ^^; b, section of stem showing undivided leaves, 

 X \^; c, ray flower, x 2; d, palea, x 9; e, disk flower, x 8; f, head of fruit, x 3%; 

 g, achene, x 8. (Courtesy of R. K. Godfrey; f, V. F.). 



