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EXPLANATION OF THE PLATES. 
Pirate CCCCLXII. Sarr NIGRA. 
. A flowering branch of the staminate tree, natural size. 
. Diagram of a staminate flower. 
A staminate flower with its scale, front view, enlarged. 
A stamen, enlarged. 
. A flowering branch of the pistillate tree, natural size. 
. Diagram of a pistillate flower. 
. A pistillate flower with its scale, front view, enlarged. 
. Vertical section of a pistil, enlarged. 
. An ovule, much magnified. 
. A fruiting branch, natural size. 
. A capsule, enlarged. 
. A seed, enlarged. 
. Vertical section of a seed, enlarged. 
. A summer branch, natural size. 
. A winter branch, natural size. 
Prate CCCCLXIII. Sarx nigra, var. FALCATA. 
Nooupondpw 
. A flowering branch of the staminate tree, natural size. 
A flowering branch of the pistillate tree, natural size. 
A staminate flower with its scale, front view, enlarged. 
. A pistillate flower with its scale, front view, enlarged. 
. A fruiting branch, natural size. 
. A capsule, enlarged. 
. A sterile branch, natural size. 
