SCROPRULAEIACE^. 137 



Stamens 4 with perfect anthers : 



Calyx winged or keeled, mouth 

 oblique 12. TORENIA. 



Calyx not winged or keeled, 

 segments equal . . . 13. VANDBLLIA. 



The 2 upper stamens only with 

 perfect anthers, the two lower 

 reduced to staminodes and 

 inserted on corolla-throat : 



Leaves with parallel veins, 

 staminodeg bilobed, capsule 

 ovate or shortly oblong . . 14. ILYSANTHES. 



Leaves pinnate-veined, stami- 

 nodea entire, capsule linear- 

 oblong . ... 15. BONN AY A. 



Corolla small, tube very short, uniform, 

 stamens 2, anther-cells diverging at 

 the base, the tips confluent, capsule 

 loculicidal. A minute glabrous 

 creeping herb 16. GLOSSOSTIQM A. 



Corolla with the upper lip or the 2 upper 

 lobes innermost iu bud or, if corolla- 

 lobes imbricate as in Scoparia, lobes 4 

 and stamens 4 : 



Corolla-tube very short, subrotate, throat 

 narrow: 



Corolla-lobes 4, sub-equal, imbricate, 



stamens 4, capsule septicidal . . 17. SCOPABIA. 



Corolla-lobes 4 or 5, unequal, one or 

 both the lateral outermost in bud, 

 stamens 2, capsule loculicidal . . 18. VERONICA. 



Corolla-tube elongate (except in 8opu- 

 bia) ; lobes 5, the two upper inner- 

 most in bud ; stamens 4, didy- 

 namous, capsule loculicidal. Plants 

 often parasitic or partially so : 

 Calyx tubular, 5-toothed or -fid : 



Corolla-tube straight or nearly so, 

 lobes subequal . . . .19. BUCHNBBA. 



Corolla-tube abruptly incurved at 

 or about the middle, the 2 upper 

 lobes smaller . . . .20. STRIGA. 



