9a. Plants ascending to erect; 



leaves obovate or broadly ellip- 

 tic; lower leaves alternate; fruit- 

 ing bracts broader than long, with 

 truncate, dentate apex and usually 

 smooth sides A. ohovata 



9b. Plants more or less prostrate; lower 

 leaves opposite or subopposite; 

 leaves usually narrower than those 

 of A. ohovata; fruiting bracts 

 longer than broad, with sides 

 usually appendaged. 



10a. Plants prostrate mats under 15 cm; 

 leaves less than 4 mm wide; stami- 

 nate flower in spikes; fruiting 

 bracts appendaged to the lower 



10b. Plants usually over 15 cm tall; 

 leaves more than 4 mm wide; 

 staminate flowers in panicles; 

 fruiting bracts various. 

 11a. Fruiting bracts 5 to 9 mm 



one-third 



A. corrugata 



wide, usually heavily tuber- 



culate; leaves light gray- 



green 



A. cuneata 



lib. Fruiting bracts 2 to 5 mm wide 



without tubercles, or if 



present, these less than 1 mm 



long; leaves green 



A . gavdnevi 



39 



