AMELANCHIER ^^^ 



scales. Leaf-scars alternate, crescent-shaped or U-shaped; 

 bundle-traces 3; stipule- scars none. 



a. Low shrubs, 0.3-8 m, high 



b. Stoloniferous, the individual 



stems scattered or loosely 



colonial 1. A. humilis 



b. Not stoloniferous 



c. Straggling, slender, often 



arching shrubs, the stems 



solitary or few in a clump 2. A. sanguinea 



c. Stems several together, 



loosely caespitose-fastigiate; 



bog plants 5. A. bartramiana 



a. Trees, up to 20 m. high 



b. Leaves densely pubescent in the 



bud 3. A. arborea 



b. Leaves glabrous or only slightly 



pubescent in the bud 4. A. laevis 



1. A. humilis Wieg. Low Serviceberry. A stiffly upright 

 shrub or small tree 0.3-8 m. high, growing in patches from 

 rhizome-like bases (stoloniferous), the individual stems scattered ; 

 buds 4-9 mm. long, dull. Rocky banks, often calcareous, 

 Quebec to Minnesota and South Dakota, south to West Virginia and 

 Ohio (Fig. 137). 



2. A. sanguinea Pursh. Roundleaf Serviceberry. A strag- 

 gling or arching slender shrub 1-2.5 m, high, 3 cm. or less in 

 diameter, not stoloniferous and not rming colonies, the stems 

 solitary or few in a clump; branchlets red or reddish-brown; buds 

 slender, reddish-brown, 6-7 mm. long, dull. Open woods or 

 rocky slopes, Quebec and Ontario, south to Iowa, Michigan, and 

 North Carolina (Fig. 138). 



3. A. arborea (Michx. ) Fernald. Juneberry. Common Ser- 

 viceberry. Downy Serviceberry . "Sarvis". (A canadensis of 

 authors, not Medic). An irregular bushy tree 5-20 m. high, the 

 trunk up to 4 dm. in diameter; leaves densely pubescent in the 

 bud; buds 6-13 mm. long. Rich woods. New Brunswick to Minne- 

 sota, south to Florida, Louisiana, and Oklahoma. Our most com- 

 mon and widely distributed species (Fig. 139). 



