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EXPLANATION OF TAB. 1. 



The Plate exhibits branches of Pinu4 ^ylveMru, which, hkc the figures in all the following Plates, 



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where the contrary is not expressed, are of the natural size. 



In the detail of the fructification such parts as are of the natural size are distinguished by small 

 letters, the magnified ones being always marked with capitals. 



a, A. Male catkin with its bracteie. 



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B;B. Anthera. 



C,C. Crest of the Anthera. 



d,D. Female catkin with its bractese. 



E. A separate scale. 



f. A ripe cone. 



The same expanded by drought, 

 h. Seed with its wing. . 



* t 



r-' 



