B 



em- 



FIG. 410. A-D, Claytonia Virginica. D, section of the seed, showing the curved em- 

 bryo, em, and the perisperm.p. E-G, Silene Virginica. G, diagram of the flower. 

 H, Cerastium vulgatum. Capsule showing the dehiscence by teeth, enlarged. 



,-S 



FIG. 411. A-E, Nuphar advena. C, flower with the showy sepals, 5, removed, to 

 show the small petals, p, the stamens, an, and pistil, gy. F-I, Nelumbo lutea. 

 H, enlarged receptacle, or torus, bearing the separate carpels, gy, sunk in cavities. 

 I, section of the upper part of a carpel, showing the single pendent ovule, ov. 



