68 



SELECTED WESTERN FLORA 



ovary 5-ceUed, each cell 2-seeded, and 

 partly divided into 2 by a false parti- 

 tion. Shrubs or small trees with al- 

 ternate, simple, petioled leaves, white 

 flowers and red or purple edible fruit. 



1. A. alnifSlia, Nutt. Saskatoon. 



A shrub 4-12 ft. high; silvery-toraeutose 

 when young, afterwards becoming glabrate 

 throughout; leaves thick, almost orbicular, 

 blunt or rounded at the apex, sub-oordato 

 at the base, coarsely dentate above the 

 middle; racemes short; petals oblanceolate ; 

 fruit purple, covered with a bloom. Rich 

 woods, Man.-Alta. 



Fig. 



XL. LEGUMINOS^ (Pea 



- Amelanchier alni- FAMILY) . 



folia. 



Herbs, shrubs or trees with alternate, 

 stipulate, compound leaves and peculiarly irregular flowers; calyx 

 6-parted; corolla of 5 petals, the upper, or standard, larger than the 

 others, enclosing them in the bud and later spread- 

 ing; the two lateral petals, wings, more narrow 

 and often more or less joined to the lower; the 

 two lower petals united to form the keel, and 

 enclosing the stamens and pistil; the whole form- 

 ing what is known "as a papilionaceous corolla; 

 stamens usually 10, and arranged in groups of 9 

 and 1, but more rarely distinct or all joined to- 

 gether; ovary 1-oelled, forming a legume in fruit. 



* Stamens entieelt distinct. 



1. Thermopsis', flowers yellow, leaves 3-foliate. 



Fig. 63. — Pistil 

 of Garden Pea. 



** 



2. 



3, 



one 



ri. 



5 



Stamens ail united in one gboup (monadelphous) . 



Amorpha, stamens joined at the base, corolla of a single petal. 



Petalostemon, stamens 5, their filaments united in a tube split down 

 side, and bearing 4 petals attached to it. 



Lupinus, stamens united in a closed tube, anthers of two kinds. 



Stamens in two gboups (diadelphotts) , usually in groups of 



9 and 1. 

 Leaves palmatelt S-S-poliate. 

 Psoralea, leaves 3 or 5-foliate, glandular-dotted. 



