OENOTHERA TRILOBA. 



NIGHT-FLOWERING (ENOTHERA. 



Octandria Monogynia, Linn. Onagrx, Juss. 



GENERIC CHARACTER. 



Calix tubulous, 4-cleft. Segments deflected, deciduous. Petals 4, inserted upon the 

 calix. Stigma 4-cleft. Capsule 4-celled, 4-valved, inferior. Seeds naked, 

 affixed to a central, 4-sided receptacle. 



SPECIFIC CHARACTER. 



Stemless ; leaves interruptedly pinnatifid, dentated, glabrous ; petals trilobed towards 

 the top ; capsules 4-winged, large. Nutt. 



Root fusiform, small, ochre-yellowish, garnished with iihres of a 

 lighter colour, annual and perennial, being affected in this circum- 

 stance by its particular kind of exposure to soil and climate. Leaves 

 radical, large, the central ones erect, the outer spreading on the sur- 

 face of the ground like those of common Dandelion. They are lau- 



VOL. II. 9 



