(250) 



1. Adenostoma Hook. & Am. 

 Chemisal. Greasewood. 



Calyx funnel-shaped; tube 10-costate; limb 

 5-parted. Petals 5; stamens a multiple. Ovary 

 1, with truncate, pubescent apex. Fruit an 

 akene, included in the persistent calyx-tube. 

 Flowers white. — b . 



1. A. FASCicuLATUM Hook. & Am. — Com- 

 mon. Summer. 



2, Alchemilla Tourn. Lady's Mantle. 



Calyx-tube urceolate, persistent; limb 4- 

 parted, wath 4 minute, deciduous bractlets. 

 Petals 0. Stamens reduced, 1-4. Ovaries 1-4; 

 styles basilar. Fruit 1-4 akenes. 



1. A. ARVENSis Scop. — 0. Common. Spring. 

 3. Acsena Vabl. 



Calyx-tube contracted at the throat, oblong, 

 angular, the angles armed with glochidiate 

 prickles; limb persistent. Petals 0. Sta- 

 mens reduced 1-5. Ovaries 1 or 2; styles 

 terminal; stigmas penicillate. Fruit an akene, 

 enclosed in the persistent calyx. — U- 



1. A. TRIFIDA Kuiz & Pavon. — Common. 

 Summer. 



4. Cercocarpus HBK. Mountain Mahogany. 



Calyx-tube cylindrical, persistent; limb 

 turbinate, 5-lobed, deciduous. Petals 0. Sta- 

 mens multiple of 5. Ovary 1; style termi- 



