118 TREES OF THE NORTHERN UNITED STATES 
2. Cléthra alnifolia, L. (Common SwEET PEPPER-BUSH.) Leaves 
wedge-obovate, sharply serrate near the apex, entire near the base, 
straight-veined, smooth, green on both sides. Racemes 
erect, often compound, with bracts shorter than the 
flowers and with smooth filaments. This is a shrub 
1 rather than a tree; abundant in wet places east of the 
re Alleghanies. Occasionally cultivated for its sweet- 
C.alnifdlia. scented flowers. 
ORDER XXVI. SAPOTACEZS. 
(SAPODILLA FAMILY.) 
A small order, mainly of tropical plants, here including 
one genus found only in the southern part of our range. 
Genus 54. BUMELIA. 
Leaves simple, alternate, entire, sub-evergreen, exstipu- 
late; branches often spiny. Flowers small, whitish, usu- 
ally crowded in fascicles. Fruit a black cherry-like drupe 
with a 2- to 3-celled nut. Shrubs and trees of the South- 
ern States. Two species (although hardly trees) are 
found far enough north to be included in this work. 
* Leaves rusty-woolly beneath... ... 1. 
* Leaves smooth or slightly silky be- 
TEACH Lacon Mesnennmved vn awusng tne aa 2, 
1. Bumélia lanuginosa, Pers. (WooLLY- 
LEAVED BUCKTHORN.) Leaves oblong-obo- 
vate, obtuse, entire, smooth above and 
rusty-woolly beneath, but not silky; spiny, 
with downy branchlets. Clusters 6- to 12- 
flowered, pubescent; flowers greenish-yel- 
low. Fruit globular and quite large (% 
in.), black, edible. A small tree, 10 to 40 ft. 
high, of the woods of southern Illinois and 
southward. With slight protection it can 
be cultivated in Massachusetts. B. lanugindsa. 
