84 THE GENUS CLARKIA. [part i. 



lobed. The stamens are very different, onl}^ 

 four of them being perfect, and the anthers of 

 the other four being wasted and destitute of 

 pollen ; and the stigma is divided into four leaf- 

 like lobes, ver}^ different from those of all the 

 other genera included in the order. The cap- 

 sule is cylindrical in shape, and furrowed on the 

 outside ; it is four-celled, and when ripe, it bursts 

 open by four valves. The seeds are quite naked. 

 Among the other genera belonging to this 

 order, I may mention the following : Gaura^ 

 the petals of which are somewhat unguiculate, 

 like those of Clarkia, but not three-lobed as in 

 that genus ; the segments of the limb of the 

 calyx often adhere two together, so as to appear 

 three instead of four ; the ovary is one-celled, 

 and the seeds naked : Lopezia^ which has ap- 

 parently five irregular petals, though, on 

 examination, one will be found to be a meta- 

 morphosed stamen, a four- cleft calyx, two 

 stamens, including the one converted into a 

 petal, and a globular, four-celled capsule : and 

 Circcea, or Enchanter's Nightshade, which has 

 the limb of the calyx apparently in only two 

 segments, and only two petals and two stamens ; 

 the capsule is globular like that of Lopezia, but 

 it is covered with very small hooked bristles, 

 and it is divided into only two cells, each con- 

 taining only one seed. 



