MAPLE FAMILY 



2. 



i. Trees, flowers in panicles, corymbs or umbel - 

 like clusters, native and cultivated 



( 1 ) Leaves pinnately-veined, irregularly ser- 



rate, flowers in terminal panicles ./. tataricum 



(2) Leaves palmately lobed, lobes coarsely 



dentate-serrate or cut, or almost entire, 

 flowers in corymbs or umbel-like clus- 

 ters 



(a) Flowers greenish, appearing with the 



leaves 

 x. Flowers in erect, flat-topped panicles, 



wings of fruit long, spreading A. flatanoides 



y. Flowers in pendant, umbel-like clus- 

 ters, long-pedicelled, wings of fruit 

 short, not spreading 

 (x) Leaves with shallow lobing, sinus 

 at the base closed, petioles and 

 veins beneath pubescent ./. nigrum 



(y) Leaves with deeper lobing, sinus 

 at the base shallow or none, 

 petioles glabrous A. saceharum 



(b) Flowers red or yellowish-red. appear- 



ing from separate buds before the 

 leaves 

 x. Flowers yellowish-red, leaves deeply 



5-lobed, lobes narrow at the base A. saccharinum 

 v. Flowers brilliant red, leaves about 3- 



lobed, lobes not narrow at the base A. rubrum 

 Leaves compound, flowers strictly dioecious ./. negundo 



Acer spicatum Lamarck 1786 Mountain Maple 



A shrub 2-4 m. high, very rarely a small tree, bark green or greenish ; 

 leaves mostly 3- (rarely 5-) lobed, coarsely serrate, cordate at the base, 

 lobes acute or taper-pointed, glabrate above, pubescent beneath, 6-12 cm. 

 long, 5-10 cm. wide, petioles 3-10 cm. long, inflorescence a raceme or nar- 

 row panicle, 7-10 cm. long, flowers greenish-yellow, 6-8 mm. broad ; sam- 

 aras 2-2.5 cm. long, wings slightly divergent, 7-8 mm. wide : s p i c a t u m, 

 in spikes. 



Moist or damp rocky woods, abundant in the northern and northeast- 

 ern part of the state, infrequent or local farther southward, collected at 



