120 



American Midland Naturalist Monograph No. 4 



Field Guide to the Species 



Leaves 1 to II/2 inches long; shrubs or small trees with erect or loosely spreading 

 stems. 

 Leaves rather coarsely toothed, mostly above the middle, more or less rounded 

 or squared at tips. 

 Leaves smooth, at least above, at maturity; flowers with petals J/2 inch or 

 more long, or only slightly less; fruits dark purple at maturity. 

 Erect shrub or small tree; leaves soon smooth on both sides; flowers 

 with petals Yl to nearly 1 inch long, borne in oblong clus- 

 ters; northwestern species 1. A. ftorida. 



Usually low and shrubby; leaves hairy or woolly below; flowers with 

 petals about ]/2 inch long or slightly less, borne in short 



dense clusters; widespread and variable species 



2. A. alni folia. 



Leaves hairy on both sides; flowers with petals about ]/4 inch long; fruits 



pale orange or yellowish at maturity 3. A. ulahensis. 



Leaves closely and finely toothed, usually to near the base, mostly pointed at 

 tips. 

 Flowers several to many in a cluster; young leaves remaining folded for 



some time after opening of bud 4. A. canadensis. 



Flowers 1 to 3 ; leaves flat when unfolding from the bud ....5. A. Bartramiana. 

 Leaves mostly less than % inch long; compact shrubs or many-stemmed trees with 



dense rounded crowns 6. A. Covillei. 



I. Pacific Serviceberry (Amelanchier florida Lindl.), fig. 55. — Tall 



erect shrubs 4 to 10 feet high or 

 slender and tree-like, sometimes 

 reaching 20 feet high; bark 

 smooth, grayish or reddish; leaves 

 elliptic to nearly round, % to 2 

 inches long, rounded at base, usu- 

 ally toothed at least above the 

 middle, green and smooth on both 

 sides or thinly hairy below when 

 young; flowers white, borne in 

 showy oblong clusters of few to 

 many; petals 5, narrowly oblong, 

 ^ to nearly 1 inch long; fruits 

 juicy apple-like berries, about % 

 inch in diameter, dark purple 

 when ripe. (Syn. A. elliptica 

 Nek). 



Occurrence. — OLYMPIC: Lake Cres- 

 cent; Duckabush River, mount RAI- 

 NIER: Lodi Creek below Berkeley 

 Park. 5,500 feet; Nisqually Valley. 

 CRATER LAKE, occasional : Gar- 

 field Peak trail; near southern boun- 

 dary of park. GLACIER, common on the 

 west side, 3,100 to 4,000 feet: Belton; 

 Lake McDonald ; Avalanche camp- 

 ground. 



Fig. 



55. Pacific serviceberry {Amelanchier 

 florida). 



