i? 



A. Seed cases detached from axis f 



THE TULIP TREE {Liriodendron TuUpifera) jj^ 



The tree frame is one of unusual symmetry and stateliness, the columnar trunk extending far into the crown. The winter ; 



twigs end in flattened buds, enclosed in a pair of stipules. The conical fruits, made up of flat-winged seed cases attached to a I I 



central spike, persist over winter, and are gradually loosened by the wind I i 



