136 Bulletin of the University of Texas 



the leaves of the preceding year. Staminate and pistillate 

 flowers in separate clusters. Fruit a greenish two winged 

 samara ripening in late spring; wings divergent. In wet 



Fig. 43. Acer saccharinum. 



ground, New Brunswick, Ontario, South Dakota, Florida, 

 Oklahoma and Texas. Many cultivated varieties with finely 

 cut leaves are planted for ornament. A very quick growing 

 tree extensively cultivated. 



5. Acer rubrum L. Red Maple. A large forest tree with 

 upright branches. Bark on young stems gray, smooth, be- 

 coming brown and shaggy on older stems. Twigs reddish 

 brown. Leaves 3-5 .lobed, the middle lobe longer than the others 

 and tapering toward the broad base, serrate margined, 

 notches wide obtuse angled, medium green and smooth above, 

 paler and somewhat hairy beneath. Flowers scarlet or yel- 

 lowish, in clusters in the axils of leaves of the preceding year. 



