ANALYTIC KEY TO THE FAMILIES XV 



Stamens 4 ; root parasite with'out green 



foliage Orobanchaceae, p. 126 



Ovary 2-celled ; seeds numerous _ 



^ Scrophulariacece, p. 122 

 3. Ovary adhering to the calyx tube. , 



TeudrU-bearing, trailing or climbing herbs 



Cucurbitacew, p. 132 

 Tendrils absent. 

 Stamens separate. 



Stamens as many as the lobes of the corolla. 



Stamens free from the corolla Campamdaceae, p. 132 

 Stame'ns inserted on the corolla tube. 

 Leaves opposite or perfoliate 



Caprifoliaceoe, p. 129 

 Leaves opposite with stipules or whorled 



without stipules . . . RubiacecB, p. 128 

 Stamens 1 less than the lobes of the corolla 



Linnaw, p. 130 

 Stamens united by their anthers. 

 Flowers separate, corolla irregular and split 



down one side Lobeliaceae, p. 133 



Flowers united in heads on a common recep- 

 tacle and surrounded by an involucre 



CompositcB, p. 134 



