KEY TO FAMILIES. 



15 



Stamens 4, in pairs, rarely 2; 

 corolla in-egular, usually 2- 

 lipped ; leaves opposite ; 

 stems quadrangular. 

 Fruit of 4 free carpels, 

 like naked seeds at the 

 bottom of the calyx ; style 

 rising between them. 

 Fruit of 4 carpels, at first 

 united in an ovoid cap- 

 sule, style rising from the 



top of the carpels 



K. Carpels 2. 



Corolla 1-lipped ; stamens 4 ... 

 Corolla 5-lobed ; stamens 5 



, :•• (partly) 



J. Fruit simple, undivided. 

 L. Fruit a capsule or drupe. 

 M. Stamens 2. 



Irees or shrubs; corolla 

 regular, 4-lobed ; fruit 

 fleshy veith few seeds 

 Herbs; corolla slightly ir- 

 regular; fruit capsular 

 with numerous seeds 



(partly) 



M. Stamens 4-5. 

 N. Stamens 4, in pairs ; corolla 

 2-lipped or with 4-5 un- 

 equal lobes ... (partly) 

 N. Stamens not in pairs ; 

 corolla regular or almost 

 regular. 

 O. Stamens 5. opposite to the 

 corolla lobes; style 1 ... 

 O. Stamens alternate with 

 the corolla lobeg. 

 P. Leaves opposite or all 

 radical. 

 Flowers in dense spikes; 

 corolla scarious, 4- 

 lobcd ; stamens 4; 

 fruit opening trans- 

 versely 



Flowers not in dense 

 spikes; corolla 5 

 lobed ; stamens 5. 

 Leaves persistant ; car- 

 pels 2 



Leaves jiot persistant ; 



carpel 1 



P. Leaves alternate or 

 none ; corolla lobes 

 and stamens 5. 



aiKTM 39 ' *1 



Labi 



Veebenace.e 40 

 Selaginace^ 41 

 bobaginace.e 36 



Oleace.e 30 



SCROPHrLAEIACE.E 38 



Sceophulaf.iace.e 38 



Peimulace-e 29 



ib 



Plantaginace-e 42 



Apocyn.ace.e 31 

 GentunacevE 33 



