IG 



KEY TO FAMILIES. 



Twilling plants, often 

 leafless and with 2 

 styles; capsule 4- 



seeded 



Plants not twining ; 

 style 1 ; capsule 



many-seeded 



Style simple or 2- 



lobed ; capsule 2- 



cellcd. 



Corolla regular; 



lobes usually 



folded in bud ... 



Corolla somewhat 



irregular; lobes 



overlapping in 



bud ; filaments 



woolly (partly) 



Style with 3 stigmatic 



branches ; capsule 



3-celled 



L. Fruit a 1-celled pod ; stamens 

 numerous, united in a tube ; 

 calyx and corolla 5-l(ibed ; 



tree (partly) 



H. Ovary inferior, adherent to the calyx- 

 tube and below the corolla; stamens 

 inserted on the corolla. 

 Q. Flowers in a head on a common re- 

 ceptacle, surrounded by a calyx- 

 like involucre. 

 Fruit 1-2-seeded, enclosed in a 

 woody, spiny pericarp ; flowers 



monoecious (partly) 



Fruit l-ccUed. 1-seeded, not enclosed 

 in a woody pericarp. 

 Stamens 4 ; anthers free ; leaves 



opposite 



Stamens 5; anthers united in a 

 tube ; leaves rarely opposite 

 Q. Flowei's not clustered in a head 

 on a common receptacle. 

 R. Leaves opposite or whorled. 



Leaves whorled; styles 2; fruit 

 consisting of 2 globular car- 

 pels; steins quadrangular ... 

 Leaves opposite. 



Stamens 1-3, style 1 ; fruit cap- 

 sular; herbs 



Stamens 5; fruit a berry; tree 

 R. Leaves alternate; 

 sexual ; stamens 3 



trailing herbs 



Flowers incomplete, without 

 calvx and corolla. 



CONVOLVULACE.F. 35 



SOLANACE^ 37 



SCROPHULARIACE.E 33 



POLEMONIACE;E 34 



Leouminos.e 16 



flowers uni- 

 fruit fleshv ; 



a distinct 



Ambrosiace^ 28 



DiPSACE.E 26 

 COMI'OSIT K 27 '2^ 



RuiiiACE.1': 24 



Vai.erianace.e 25 



CAPRIiOMACE.K 25 



CUCUKBITACE/E 19 



