134 Bulletin of the Unversity of Texas 
tree with smooth, brown bark, and purple twigs. Leaves 
palmately compound, leaflets 5-7, firm, pointed at the apex, 
finely serrate, lustrous and smooth above, almost smooth be- 
neath. Flowers in terminal panicles, red, with stamens as 
long or longer than the petals. Fruit a smooth oblong, obovate 
capsule with dark brown seeds. 
3. Aesculus octandra Marshall. Sweet Buckeye. A large 
forest tree 100° high or in our area sometimes a shrub with 
brown, scaly bark. Leaves palmately compound with 5-7 
oval to obovate or elliptic leaflets, which are short-stalked 
or sessile, long pc:nted at the apex, finely serrate, smooth 
above, hairy along the veins beneath. Flowers yellowish or 
purplish in terminal panicles. Fruit a smooth obovoid pod. 
In woods and along streams, Pennsylvania, lowa, Georgia, 
Louisiana and Texas. In western Texas it becomes a shrub. 
The tree has been extensively planted for ornament. The 
wood is very lght. 
ACERACEAE Tourn. Maple Family. 
Trees with opposite, simple or pinnately compound leaves 
which are usually 3-5 !cbed, small flowers in axillary or termi- 
nal clusters... Fruit a two winged double samara. 
Leaves simple, palmately lobed twigs, reddish 
BROWAIS soo Al og ee As Oe tet oft BM a eres Acer. 
Leaves pinnate or trifoliate, twigs green or 
PUL DISH.y, 2s -sse aaa ee sce oes baer doe Goeen ceicaaes Rulac. 
ACER (Tourn.) L. The Maples. 
1. Leaves with large teeth or lobes, the margin 
entire. 
a. Leaves large, eastern species. 
(1) Bark on trunk gray or nearly black.. 1. A. saccharum. 
(2) Bark -on tromle whitessi <0 +e eee 2. A. Floridanum. 
b. Leaves small, western trees............ 3. A. grandidentatum. 
2. Leaves with 3-5 primary lobes, the margins 
of the lobes serrate or toothed. 
a. Leaves distinctly 5 lobed, the terminal 
lobe long and broadest at apex..... 4, A. saccharinum. 
b. Leaves with 3-5 shallow lobes, the 
terminal lobe broadest at the base. 
(1) Leaves almost or quite smooth below 5. 
(2) Leaves persistently wooly below.... 6. 
. rubrum. 
. Drummondi. 
> > 
