246 OCTANDRIA. MONOGYNIA. 



sule prismatic, grooved. — CE. albicauUs, Piirsh, Flor. Arri. 

 2. p. 734, Allied to CE. tetraptera, but very dilferent in the 

 capsule and style. Hae. On the banks of the Missouri 

 near White river, in denudated argillaceous tracts. An- 

 nual, and flowering in AJay and June. P'iowers large and 

 white, becoming reddish on withering. In arid situa- 

 tions not more than 4 or 6 inches high, in other places 1 

 or 2 ieet, but alv/ays decumbent; tube of the calix longer 

 than the germ; capsule an inch long, not more than a line 

 and a half wide, quadrangular, and slightly margined, 



9. * ccespiiosa. Cespitose and stemlcss; leaves lanceolate, 

 slnuately or repandly toothfid, smooth, petals very large, 

 dilatediy subbilobed; lube of the calix very long; capsule 

 subconic-ohlong, sessile, margin of the valves cristately 

 rouricate. Hab, On denudated and arid argillaceous hills 

 on the banks of the Missouri, from White river to the 

 Mpndans, and in all probability to the commencement of 

 the mountains. Obs. Segments of the calix carinate, ap- 

 pearmg prismatic before flowering; seeds cylindric-ovate; 

 plant 3 or 4 inches higi), tube of the calix two and a half 

 inches, flower often 3 inches in diameter. This species 

 is considerably allied to <£. acauUsy which produces pin- 

 natifid leaves and alated capsules, m this the leaves 

 are entire, and the capsules considerable like tiiose of 

 (E. biennisf cylindric-conic, and tuberculately crested 

 along the margins of the valves; the flowers are white, of 

 imcommon magnitude, and become tinged with red in 

 withering: where its diu'ation is long continued it produ- 

 ces numerous cespitose tufts, but from appearances of 

 this kind its existence is seldom continued through more 

 than 5 or 7 years. 



10. • serrulata. Stem low, slender and suffruticose, mi- 

 nutely pubescent, as well as the under side of the leaves 

 and capsules; leaves oblong-linear, irregularly serrulate; 

 flowers distant, axillary; calix sessile, angular, funnel- 

 form; capsule prismatic, slender; petals roundish, entire; 

 stamina and stvle very short; stigma almost undivided, 4- 

 toothed. Hab. From the river Platte to the mountains, 

 on dry hills; flowering in June. Somewhat allied to tE. 

 dentato, but appears very diflferent on inspecting the figure 

 of that species in the Flora Peruviana. Obs. Stem simple, 

 slender, 8 to 12 inches high, foliose; leaves a little more 

 than an mch long, 2 to 3 lines wide, attenuated downwards, 

 distinctly serrulate, not toothed; flowers a little larger 

 than those of CE. sinuato, bright yellow; calix quadran- 

 gular, sessile, funnelform. segments ovate, and carinate, 

 stamina and style scarcely exserled beyond the calix; germ 

 hoary and pubescenti capsule quadrangular, closely 8es« 



