760 COLUMELLIACE^E. [Epigynous Exogens. 



must either suppose that three more such triple stamens are abortive, and that conse- 

 quently the typical number of parts in the andrceceum is 25, or we must imagine that 

 the typical number is 10, and that each of the stamens actually developed is composed 

 of two stamens opposite the segments of the corolla, and one alternate with them ; in 

 that case three of the stamens alternating with the lobes of the corolla, and two 

 of those opposite the lobes will have to be supposed undeveloped. This would give 

 us a pentamerous monopetalous flower, with twice as many stamens as parts of the 

 corolla. Endlicher adopts this view so far as admitting the existence of three anthers 

 to each stamen. 



The species hitherto discovered are from Mexico and Peru. 



They are not stated to possess any useful properties. 



GENUS. 



Columellia, R. P. 

 Uluxia, Juss. 



Numbers. Gen. 1. Sp. 3. 



Onagraceee. 

 Position. — Vacciniacese. — Columelliace^e. — Cinchonacese- 



