194 



MISSOURI BOTANICAL GARDEN. 



strongly suggests the significance of the exserted condition 

 of the anthers in apical dehiscence. 



Diptcrocarpaceae. 



A 



and Vatica have anthers opening more or less terminally, 

 but the only genera to be considered in this paper are 

 Slemonoporus (12-13 species endemic in Ceylon), and 



Mi 



( 



endemic 



), both of 



which in the general habit of the flower fall clearly into 

 the Solanum-Cassia type. 



South African 



Flacourtiaceae. 



Of the Flacourtiaceae, Kiggelaria 

 species) may be assigned to this type. 



Begoniaceae. 



In the Begoniaceae, Begonia is the principal genus, being 

 represented by about 400 species throughout the warmer 

 regions of the whole world. In all the species , the stamens 

 arc numerous, anthers basifixed, rarely almost spherical, 

 usually ovate or oblong to linear, connective produced in 

 various forms beyond the locules or not, filaments lono- or 

 short as compared with the anthers, free or monadelphous. 

 The dehiscence is by lateral slits. In two Brazilian species, 

 forming the section Solanthera, the filaments are free, 

 anthers linear, obtuse, much longer than the filaments and 

 opening at the apex through two pores. In the section 

 Parvibegonia, of 8 Indian species, dehiscence is said to be 

 lateral, by short, subapical slits in six species, and by 

 «« pores" in the other two. My knowledge of the Indian 

 species is very incomplete, but the Brazilian forms may 

 certainly be placed in this type. 



Myrsinaceae. 



In the Myrsinaceae, Cybianlhus, with small broad an- 

 thers dehiscing by elongate or short and subapical, some- 





