432 



ILLUSTRATIONS OF THE NATURAL ORDKRS. 



sinuses often appendaged, persistent. Corolla regular, imbricated or 

 convolute in aestivation, usually furnished with scales or honey-bear- 

 ing grooves inside ; the five stamens inserted into its base, alternate 

 with the lobes. Ovary free, with two parietal placenta;, which in 

 Ilydrophyllum dilate in the cell and appear like a kind of inner peri- 



carp in the capsular fruit. Styles partly united. Seeds few, or 

 sometimes numerous, amphitropous, crustaceous. Embryo small, 

 in hard albumen. — Ex. Hydrophyllum, Nemophila, and Phacelia; 

 nearly all North American plants, some of them handsome and now 

 well known in cultivation. To this order, as a tribe, is now joined 

 the Hydrole.* (formerly the order Hydroleaceee), having often 

 entire leaves, two distinct styles, a commonly two-celled ovary by 

 the union of the two placenta? in the axis, and numerous seeds 

 with a fleshy albumen. These are chiefly tropical or subtropical 

 herbs, or low shrubs. 



FIG. 1010. Ilydrophyllum Virginicum. 1011. A flower, nearly of the natural size 1012. 

 Corolla laid open. 1013. Capsule, with the persistent calyx and style. 1014. Magnified seed 

 1015 Section of the same 101(3. Highly magnified einhryo. 



