i/4 ROSE ORDER 



(a) Pods 2-grooved above, the midrib and 



edges making 3 ridges, stalked in the 

 calyx, hanging 

 x. Flowers violet, 10-15 mm. long; pods 



about 15 mm. long A. bisulcdtus 



y. Flowers white, purple-tipped, 7-10 mm. 



long; pods about 10 mm. long A. haydenidnus 



(b) Pods deeply grooved below, the midrib 



much intruded 

 x. Flowers white to yellowish ; pods 2-3 

 cm. long, stalk usually longer than 

 the calyx 

 (x) Stems and leaves long gray-hairy A. Drummondii 

 (y) Stems and leaves fine-hairy or 

 smooth 

 m. Calyx black-hairy; pod curved A. scopulorum 

 n. Calyx white-hairy ; pod mostly 



straight A. racemosus 



y. Flowers purple ; pods about 1 cm. long, 

 stalk equal to or shorter than the calyx 

 (x) Pod densely black-hairy ; stalk 



equalling calyx A. alpinus 



(y) Pod not black-hairy; stalk shorter 

 than calyx or none 

 m. Leaves ovate to rounded ; pods 



mottled, little hairy A. sparsiilorus 



n. Leaves oblong to linear ; pods not 



mottled, often shaggy A. humistrdtus 



(c) Pods not grooved above or below, the 



lower midrib intruded little if at all 

 x. Pods distinctly to greatly inflated, 

 papery ; in one species less inflated 

 and rather leathery, the upper midrib 

 prominent 

 (x) Stems very short or lacking 

 m. Pods 6-15 mm. long, sessile, the 

 upper midrib not acute and 

 prominent 

 (in) Pods mottled, globose, smooth, 

 8-10 mm. wide ; leaves linear 

 to oblong A. jejunus 



