xlii 



INTRODUCTION. 



jEstivation of the calyx vah'ate 

 ^Estivation of calyx imbricate. 



Flowers regrilar. Leaves exstipulate. Ovarium } ,00 

 superior - - - - - S ' 



Flowers irregular. Leaves with large membranous ^ 1 =n 

 stipulae - - - - - J 



Ovarium with 1 cell, and parietal placentae. 



Fruit indeliiscent .... 



Fruit dehiscent. 



Flowers unisexual or deformed. 



Embryo straight ... 



Embryo reniform ... 



Flowers hermaphrodite. 



Stamens perigynous. Leaves dotted 

 Stamens hj'pogj'^nous, unilateral 

 ^5[ Ovula definite. 



Their point of attachment at or near the apex of the cell. 

 Valves of the anthers curling upwards 

 Valves of the anthers bursting longitudinally. 

 Ovaria several, distinct in each calyx 

 Ovaria single, sometimes lobed or spiked, uni- 

 sexual. Ovula two or more in each cell. 

 Flowers amentaceous. 



Ovarium inferior. Albumen - 

 Ovarium superior. Albumen fleshy 

 Flowers collected upon a fleshy receptacle. } 

 Ovula always single in each cell - - J 



Flowers (solitary), with loose inflorescence. 

 Ovarium 4-celled - - - 



Ovarium 2-ceUed, indehiscent 

 Ovarium 3- or many-celled 

 Ovarium ] -celled. 

 Calyx many-parted 

 Calyx tubular. 



Calyx superior . - . 



Calyx inferior. 

 Fruit 2-valved 

 Fruit indehiscent. 



Leaves with stipulae 

 Leaves without stipulae. 

 Flowers naked 

 Flowers in an involu- ^ 

 cellum - - 5 



Their point of attachment at or near the base of the cell. 

 Valves of the anthers curling upwards 

 Valves of the anthers bursting longitudinally. 



Calyx superior .... 



Calyx inferior. 



Stamens combined in a cylinder 

 Stamens distinct. 



Embryo a homogeneous solid mass 

 Embryo with distinct radicle and cotyledons. 

 Kadide at the end remote from the hilum. 

 Stipiilw distinct - - 



Stipulae ochreate ... 



Radicle next the liilum. 

 Stamens hypogynous 

 Stamens perigynous. 

 Calyx tuliular. 



Eml)ryo curved round albumen 

 Embryo straight. 



Stamens oi)posite the sepals 

 Stamens alternate with the } 

 sepals - . j 



Calyx of several leaves, or deeply 

 divided. 

 Embryo without albumen 

 Embryo curved round albumeii. 



20. 



61. 



78. 

 156. 



Athergsperme^. 

 Juglande^. 

 Myristice^. 

 PenjEacEjE {bis). 



Urtice.e. 



POLYGONEiE. 



158. NyctaginejE. 



152. Scleranthe^. 



Proteace.e. 

 El.eagne^. 



155. PETlVEHACEiE. 



