I 7 6 ROSE ORDER 



(n) Pods more or less hairy; flow- 

 ers 3-15, yellowish or purp- 

 lish; leaves linear to ovate A.trifidrus 

 y. Pods not inflated 



(x) Pods with an incomplete cross wall, 

 caused by the intrusion of the 

 lower mid rib 

 m. Pods long-stalked 



(m) Pods smooth; leaves linear to 

 lance-oblong; flowers white, 

 or tinged with violet 

 r. Pods papery; leaflets 7-13, 

 linear to lance-oblong; flow- 

 ers white, tinged with violet A. aboriginum 

 s. Pods leathery; leaflets 13-25, 



obovoid ; flowers yellowish A. Beckwithii 

 (n) Pods black-hairy; leaves ob- 

 long to oval; flowers yel- 

 lowish, tinged with purple A.Macounii 

 n. Pods not at all or scarcely stalked 

 (m) Wall of pod thin, soft and pa- 

 pery 



r. Clusters many-flowered ; flow- 

 ers purple ; leaves oval to 

 oblong A. elegans 



s. Clusters few-flowered ; flowers 

 white or yellowish, purple- 

 tinged ; leaves linear A. Brandegei 

 (n) Wall of pod thick, stiff and 



leathery or woody 

 r. Stems tall, 1-4 ft., smooth; 

 leaflets oblong to ovate ; flow- 

 ers white; pods tapering to 

 a short stalk-like base A. Patter sonii 



s. Stems low, tufted, 1-8 in. high ; 



leaves gray-hairy or silky 

 (r) Pods with long shaggy 



wool 

 h. Flowers purple ; leaves 



nearly round, woolly A. utahensis 

 i. Flowers yellowish 



