CLASSIFICATION OF DICOTYLEDONS. 



189 



fragrans of the East Indies. " Mace " is the " aril " or cover- 

 ing of the seed of the same plant. 



The second order of the Aphanocydce comprises a number of 

 aquatic plants, mostly of large size, and is known as the 

 Hydropeltidince. The flowers and leaves are usually very 



FIG. 102. Types of Aphanocyclse (Hydropeltidinss) . A, yellow water-lily, 

 Nymphsea (Nymphssacess) , x %. B, a leaf of the same, x 3 / 6 . C, freshly 

 opened flower, with the large petal-like sepals removed, x %. p, petals, an. 

 stamens, si. stigma. Z), section of the ovary, x 2. E, young fruit, x y 2 . 

 F, lotus, Nelumbo (Nelumbiese) . x V. G, a stamen, x 1. H, the large 

 receptacle, with the separate pistils sunk in its surface, x %. 1, section of a 

 single pistil, x 2. ov. the ovule. J, upper part of a section through the 

 stigma and ovule (ov.), x 4. 



large, the latter usually nearly round in outline, and fre- 

 quently with the stalk inserted near the middle. The leaves 

 of the perigone are numerous, and sometimes merge gradually 

 into the stamens, as we find in the common white water-lily 

 (Castalia). 



