G4 THE FOREST TREE CULTURIST. 
Red Maple somewhat less than natural size. Flower 
small, not very conspicuous ; seeds in pairs, remaining to- 
gether until ripe; each seed is furnished with a long wing- 
like appendage. Seeds of this form are called keys, or by 
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Fig. 17. Fig. 18. 
botanists, samaras. In fig. 18 a pair of the Oregon Maple 
seeds are shown; they are somewhat larger than any of 
the species native of the Atlantic States. 
Acer saccuarinum (Sugar Maple, Rock Maple, Hard 
Maple).—Leaves three to five lobed, deep green above and 
paler beneath; flowers greenish yellow, appearing with 
the leaves; wing of seeds auite broad; ripe in autumn; 
* 
