84 Key to the System of 



GESNERIACEAE. 



416. Anthers disconnected; fruit succulent. 



Epiphytal herb ; stamens four, all perfect ; fruit beyond 



the base free from the calyx. Fieldia. 1709 



SCROPHULARINAE. 



417. Calyx producing conspicuous lobes or denticles ... 418 



Calyx deeply divided into segments ... ... 422 



418. Flowers minute ... ... ... ... ... t 419 



Flowers comparatively large ... ... ... ... 420 



419. Stigma almost globular. 



Small herbs, usually creeping and semiaquatic ; leaves long- 

 stalked, fascicled at the root or nodes ; calyx five-lobed ; 

 stamens with pollen-bearing anthers four ; anthers one- 

 celled. Limosella. 1710 



Stigma almost spatular. 



Small creeping herbs, not rarely semiaquatic ; leaves mostly 

 opposite or some crowded, usually short-stalked ; flowers 

 solitary, axillary ; calyx three- or four-lobed ; stamens 

 with pollen-bearing anthers two or four ; anthers one- 

 celled. Glossostigma. 1711 



420. Calyx four-lobed. 



Herbs, always small ; leaves constantly opposite, rather or 

 quite small, indented, seldom deeply incised ; flowers in 

 spikes ; upper of the terminal portion of the corolla 

 almost flat ; stamens with pollen-bearing anthers four ; 

 stigma minute, almost entire. Euplirasia. 1712 



Calyx five-lobed or five-denticulated ... ... ... 421 



421. Calyx conspicuously five-lobed. 



Always herbs ; leaves basal or the lower opposite and the 

 upper scattered; stamens \wth pollen-bearing anthers 

 four; anther-cells contiguous; stigma bilobed. Mazus. 1714 



Calyx five-denticulated. 



Herbs or rarely shrubs ; leaves constantly opposite ; calyx 

 conspicuously tubular, five-angled ; stamens with pollen- 

 bearing anthers four ; anther- cells contiguous ; stigma 

 dilated. Mimulus. 1715 



