KEY TO THE ORDERS 9 



Filaments free. Tiliacere. 



Filaments monadelphous. Sterculiacese. 



- vies IT. Discifloral. Flowers usually bisexual and regular; calvx 

 inferior, petals distinct or connate at the very base, with usuallv a perigyuous 

 or hypigynons disk or row of glands b-h\vmi their insertion and the ovarv. 

 Stamens inserted on or at the inner or out-r base of the disk, or between 

 the gl.i'ids, or on the p.t iK 

 Flowers regular. 



Fruits of separate carpels. 



-cl>md-<!otte 1 . R u t n e e se. 



g^and-dotted. 

 Leaves oppo-it\ 



Leaves pionat^ Zygophyllac* 



Ejearee <iin]>]f. Coriariea?. 



Leaves alt-rnate, r-xstipnl-it'. compound. 



Stamens iuseiied chiefly outside the disk. 



Sim&rnbesB. 

 Stamens inserted cliieHy inside the disk. 



S pindacere. 

 Fruits syucai^us. 



Herbs. 



Terrestrial 



Leaves stipulate, stamens many. 



Tiliacero. 



Leaves stipulate. ( T e r a u i a c e a?. 



Leaves exstipuLite. Lin< -/;>?). 



Aqimtic herl>s, disk aduate to the ovary. 



Wl iole plant float ing. ( ) n a g r a r i e a> ( Trapa}. 



leaves and flowei-s only floating. 



Xy mp lire ac ere. 

 Trees or shrubs. 



Stamens 5 or fewer, opposite or on the petals. 

 Leaves simple. 



