SMALL DECIDUOUS TREES. 133 
bloom. The catkins are formed early in spring, and re- 
main naked through the summer and following winter, 
expanding the next spring; wood valuable for fuel; char- 
Fig. 42. 
coal made from Alder is highly prized by manufacturers 
of gunpowder; grows in low, wet soils on the banks of 
streams ; seeds ripen in early summer, and should be sown 
soon after being gathered. It also orows readily from cut- 
tings, which should be planted in spring. This species 
is a native of both Europe and America. 
ASIMINA TRILOBA. (Pawpaw, Custard Apple.) 
Leaves oblong ovate, acuminate, eight to ten inches 
