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EXPLANATION OF THE PLATES. 
Piatt CCXVII. Nyssa syLvarTica. 
. A flowering branch of the sterile tree, natural size. 
. A flowering branch of the fertile tree, natural size. 
A staminate flower, enlarged. 
. Vertical section of a staminate flower, enlarged. 
. A pistillate flower, enlarged. 
. Vertical section of a pistillate flower, enlarged. 
. A fruiting branchlet, natural size. 
. Vertical section of a fruit, enlarged. 
. A fruit cut crosswise, enlarged. 
. A stone, enlarged. 
. An embryo, much magnified. 
A winter branchlet, natural size. 
Puate CCXVIII. Nyssa syLvatica, var. BIFLORA. 
1. 
. A flowering branch of the fertile tree, natural size. 
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A flowering branch of the sterile tree, natural size. 
. Vertical section of a sterile flower, enlarged. 
. Vertical section of a fertile flower, enlarged. 
. A fruiting branch, natural size. 
. A fruit cut crosswise, enlarged. 
. A stone, enlarged. 
