452 



ILLUSTRATIONS OF THE NATURAL ORDERS. 



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?, Avhich in 

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



1010 



1013 



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

 sometimes numerous, ampliitropous, 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 HydrolEjE (formerly the order Hydroleaceee), having often 

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

 the union of the two placentas in the axis, and numerous seeds 

 with a fleshy albumen. These are chiefly tropical or subtropical 

 herbs, or low shrubs. 



FIG. 1010. Hydrophyllum 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. 1016. Ilighly magnified embryo. 



