INTRODUCTION. 



xli 



Leaves simple, without stipulse 93. 

 Leaves compound, with stipulae 97- 

 Stamens some multiple of the num- 

 ber of the petals. 

 Ovula in pairs - - 112. 



Ovula sohtary - - 109. 



Flowers irregular - ... I27. 



^% Ovarium inferior. 

 Ovarium 1 -celled, with parietal placenta;. 



Stamens partly sterile. Petals and sepals dissimilar 

 Stamens all fertile. 



Petals and sepals alike. 



Vegetation normal - . - - 



Vegetation succulent - - - 



Petals and sepals diiferent - - . 



Ovarium with several cells, and the placentae in the axis ; or, 



if with only one cell, then with the ovula not parietal, but 



erect or pendulous. 



Sepals with a spur - - . - 



Sepals without a spur. 



Leaves with pellucid dots (opposite and entire) 

 Leaves without pellucid dots. 



Embryo lying on the outside of (mealy) albumen 

 Embryo in the axis of the seed. 



Anthers inflexed in aestivation (long). 



Leaves 1 -ribbed. Cotyledons convolute. ) 



Seeds few - - - 5 



Leaves 3- or more ribbed. Cotyledons flat. ) 



Seeds numerous - - - J 



Anthers not inflexed in aestivation (roundish). 



Ovula indefinite. 



Stamens indefinite. 



Seeds without albumen 

 Seeds with albumen 

 Stamens definite. 



Divisions of the calyx 5 (rarely 4) 

 Divisions of the calyx 4 

 Ovula definite. 



Ovula erect - . . 



Ovula pendulous. 



Stamens equal to the sepals, or 

 fewer. 

 Albumen wanting. (Cotyle- ) 

 dons unequal) - - f 



Embryo in the axis of albumen. 

 Sepals depauperated, with } 

 an open aestivation - 5 



Sepals imbricated. Ovarium ^ 

 half superior - - 5 



Embryo minute in the base of 

 albumen. 



Cells of ovarium 2 

 Cells of ovarium more ^ 

 than 2 - - J 



Stamens some multiple of the sepals. 

 Stipulae present. 



Leaves alternate. (Stipulae } 



deciduous) - S 



Leaves opposite. (Stipulae in- ^ 



terpetiolar - - ^ 



Stipulae absent. 



Cotyledons convolute. (Petals } 

 oblong) - - i 



Cotyledons flat. (Petals linear) 

 ** APETALiE. 



Petals usually absent. 

 ^ Ovnla indefinite. 



Ovarium with several cells. 



Celastrine.^. 

 StaphyleacejC. 



BuRSERACEv*. 



Spondiace^. 

 VochyacEj* {bis). 



51. LoASEiE. 



Lecythide^. 

 Philadelphe^e. 



Escallonie.e. 



ONAGRARIiE. 



49. CiRC^EACEjE. 



