346 CCTANDRIA. MONOGYKIA, 



sule prismatic, grooved. — (E. albicmilis, I'ursb, Flor. Am. 

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

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

 near White river, in denudated ar^^illaceous tracts. An- 

 nual, and flowering- in May and Jtine. Flowers 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 feet, but always decumbent; tube of the calix longer 

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

 apd a half wide, quadrangular, and slightly margined. 



9. * ciespitosa. Cespitose and stemless; leaves lanceolate, 

 slnuately or repandly toothed, smooth, petals very large, 

 dilatedly subbilobed;' tube of the calix very long; capsule 

 Kubconic-oblong, ses^sile, margin of the valves cristately 

 niuricate. Hab. On denudated and arid argillaceous hills 

 t^n the banks of the Missouri, from White river to the 

 Mandans, and in all probability to the commencement of 

 the mountains. Obs. Segments of the ca'.ix carinale, ap- 

 pearing prismatic before flowering; seeds cylindric-ovate; 

 plant 3 or 4 inches high, tube of tiie calix two and a half 

 inches, flower of en 3 inclies in diameter. This species 

 is considerably allied to «E. ucauUs, which produces pin» 

 natihd leaves' and alated capsules, in this the leaves^ 

 are entire, and the capsules considerable like those of 

 CE. biennis, cylindric-conic, and tuberculately crested 

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

 uncommon magnitude, and become tinged with red in 

 withering: where its duration is long continued it produ- 

 ces numerous cespitose tufts, but from ap])earances of 

 ihis kind its existence is seldom continued through m.ore 

 tlian 5 or 7 years. 



\{).* sevrnJata. Stem low, slender and sufTruticose, mir 

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

 and capsules; leaves oblong-linear, irregularly serrulate"; 

 flowers distant, axillary; calix se&sile, angular, funnel- 

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

 stamina and st\le very short; stigma almost undivided, 4- 

 toothed. Hab. From the river Platte to the mountain^, 

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

 dentata, but appears very different 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 inch long, 2 to 3 lines wide, attenuated downwards, 

 distinctly serrulate, not toothed; flowers a little larger 

 than tho'se of ffi. sinuata^ bright yellow; calix quadran- 

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

 stamina and style scarcely exseried beyond the calix; germ 

 hoary and pubescent; capsule quadrangular, «iosely sc-s- 



