Fig. 421: a-d, Nitrophila occidentalis: a, branch of plant, x %; b, end of branch, 

 X 2V2; c, flower, x 5; d, perianth opened, x 5. e-g, Sarcobatus vermiculatus: e, staminate 

 inflorescence, x 5; f, pistillate flowers on a branch, x 21/^; g, pistillate flower, x 5. 

 (V. F.). 



