ACER PENNSYLVANICUM, L. 149 



or slightly drooping racemes ; flowers small and numerous, 

 both kinds in the same raceme, the fertile near the base ; all 

 upon very slender pedicels ; lobes of calyx 5, greenish, downy, 

 about half as long as the alternating linear petals ; stamens 

 usually 8, in the sterile flower nearly as long as the petals, in 

 the fertile much shorter ; pistil rudimentary, hairy in the 

 sterile flower; in the fertile the ovary is surmounted by an 

 erect style with short-lobed stigma. 



Fruit. In long racemes, drooping or pendent; the keys, 

 which are smaller than those of any other American maple, 

 set on hair-like pedicels, and at a wide but not constant 

 angle ; at length reddish, with a small cavity upon one side. 



Horticultural Value. Hardy in cultivation throughout New 

 England ; prefers moist, well-drained, gravelly loam in partial 

 shade, but grows well in any good soil ; easily transplanted, 

 but recovers its vigor rather slowly ; foliage free from disease. 



Seldom grown in nurseries, but readily obtainable from 

 northern collectors of native plants. 



PLATE LXXV. ACER SPICATUM. 



1. Winter buds. 



2. Flowering branch. 



3. Sterile flower. 



4. Abortive ovary in sterile flower. 



5. Fertile flower with part of the perianth and stamens removed. 



6. Fruiting branch. 



Acer Pennsylvanicum, L. 

 STRIPED MAPLE. MOOSEWOOD. WHISTLEWOOD. 



Habitat and Range. Cool, rocky or sandy woods. 

 Nova Scotia to Lake Superior. 



Maine, abundant, especially northward in the forests ; 

 New Hampshire and Vermont, common in highland woods ; 

 Massachusetts, common in the western and central sections, 

 rare towards the coast ; Rhode Island, frequent northward j 



