EXPLANATION OF THE PLATES. 
Pirate CCCCXC. Porunus BALSAMIFERA. 
. A flowering branch of the staminate tree, natural size. 
. A staminate flower with its scale, enlarged. 
A flowering branch of the pistillate tree, natural size. 
. A pistillate flower with its scale, enlarged. 
. A scale of a pistillate flower, enlarged. 
. A fruiting branch, natural size. 
. A fruit with open valves, enlarged. 
. A seed, magnified. 
WON AA Pw DS 
- Vertical section of a seed, magnified. 
— 
=) 
- An embryo, much magnified. 
Puatt CCCCXCI. Poruus BALSAMIFERA, var. CANDICANS. 
1. A flowering branch of the staminate tree, natural size. 
. A staminate flower with its scale, enlarged. 
. A flowering branch of the pistillate tree, natural size. 
. A pistillate flower infolded in its scale, enlarged. 
. A pistillate flower, enlarged. 
. A pistil, enlarged. 
. Cross section of an ovary, enlarged. 
- Vertical section of an ovary, enlarged. 
oOo OND OP w bd 
. A fruiting branch, natural size. 
ra 
oO 
. A fruit, enlarged. 
f= 
ary 
. A seed, magnified. 
12. Vertical section of a seed, magnified. 
= 
ie) 
. An embryo, magnified. 
= 
tS 
- Portion of a branch with the base of a petiole, and stipules, enlarged. 
—_ 
Or 
. A winter branch, natural size. 
