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PLATE XV. LETTER XIX. 



HEPTANDRIA. 



Fig. i. JEfculus Hippocaftanum. Horjz 

 Chefnut. 



a The corolla of five petals, and the feven 

 ftamens, with bending filaments. 



b The one-leafed calyx, fwelling at the bafe, 

 and divided at top into five fegments. 



c Theyoungcapfule terminated by the ltyle, 



d A fingle ftamen. 



OCTANDRIA. 



Fie. a. Oenothera biennis. Tree Primrofe* 



a A flower, mowing the four-parted calyx, 

 and the corolla of four obcordate petals, 



b The eight ftamens, and the piftil in the 

 middle, with the deflected calyx. 



C The piftil, with the filiform ftyle, and the 

 quadrifid ftigraa. 



d The capfule. 



e A tranfverfe fe&ion of the capfule, mow- 

 ing the four cells. 



f 



