(51) 



7. Acanthomintha. Lower pair of stamens 

 ascending. Cells of the anthers divar- 

 icate. Calyx 2- labiate, teeth spinose. 



8. Lophanthus. Upper pair of stamens 

 longer and declined, lower pair shorter 

 and ascending. Anther cells parallel. 

 Calyx 15-nerved. 



9. Trichostemma. Stamens long-exserted, 

 lower pair longer. Tube of corolla slen- 

 der; Iimb5-cleft, lobes oblong, declined. 



II, Angiospermia, 



A. Base of the anther cells mucronate. 



a. Ovary 1 -celled &-ovulate, placenta 

 parietal. 



1. Anoplantlms. Flowers without bract- 

 lets. Parasitic. Chlorophyll 0. 



2. Aphyllon. Flowers with bractlets. 

 Parasitic. Chlorophyll 0. 



b. Ovary -celled, cc-ovulate. Fruit 1- 

 cc-seeded. / 



1. Pedicularis. Calyx 5-dentate, superior 

 lip of corolla laterally compressed. 



B. Base of anther cells not mucronate. 



a. Ovary 1-celled. Placenta cc-seeded, 

 central. 



1. Limosella. Calyx 5-dentate. Corolla 

 subregular. 



