Explanations of Plates 36 to 58, Genus Atmplex. 



Plate 57 — continued. 



(8) A fruiting bract from Antelope Valley, Cali- 



fornia, showing the marked constriction at 

 base of terminal lobe; X 2. 



(9) Vertical section of the same showing the 



superior position of the radicle, X 16. 

 Plate 58. 



Atriplex canescens typica. 



(1) Fruiting twig from a shrub growing at Piru, 



Ventura County, Cahfornia; X 1. 



(2) Portion of an inflorescence of a staminate 



plant from the Argus Mountains, California 

 (128981 UC); X 1. 



(3) Staminate flower from the same, X 16. 



(4) Fruiting bracts of a plant from the Coronados 



Islands, Lower Cahfornia; X 2. (195317 

 UC, see minor variation 20, p. 345.) 

 (6) Fruiting bracts from Clark County, Nevada 

 (176399 UC), similar to those from the 

 islands: X 2. 



Plate 58 — continued. 



(6) A fruiting bract from southern California 



(7060 UC), X 2. 



(7) A fruiting bract from plant shown in fig. 1, X 2. 



(8) End view of the same, X 2. 



(9) Vertical section of the same showing the 



superior position of the radicle, X 2. 



(10) Habit sketch of a shrub at Winslow, Arizona; 



X 0.032. 



(11) A fruiting bract of var. Iaci7iiaia, X 2. (From 



the type collection, Gr. See minor varia- 

 tion 5, p. 344.) 

 Atriplex canescens aplera. 



(12) Three fruiting bracts from the type specimen, 



X 2. (64938 R.) 

 Atriplex ca7iescens iiji€ari«.||^(Drawn from the type 

 specimen, Gr.) 



(13) Fruiting bracts, X 2. 



(14) Leaves showing the narrow shape, X 1. 



