SAREACENIACEJ1, 223 



nally, turned by the twisting of the filaments so that the cells are 

 anterior and posterior, the smaller cell lying against the ovary. Pol- 

 len simple and spherical. Ovary turbinate, 5-celled, and somewhat 

 5-lobed, concave and dilated at the summit, so as to form a sort of 

 margin which projects over the stamens : style columnar, short, 5-lobed 

 at the summit ; the narrow segments diverging, and stigmatose at the 

 extremity on the inside. Ovules very numerous, anatropous, cover- 

 ing the large placentse, which project into the cells of the ovary. No 

 fruit was found, but on one of the specimens there was a small portion 

 of a capsule, which was evidently 5-celled. 



From Sarracenia this genus differs in the calyx not being calyculate; 

 in the form of the petals; in the somewhat definite and uniserial 

 stamens; in the dilated turbinate ovary; and especially in the absence 

 of the large umbrella-shaped summit of the style, which is so con- 

 spicuous in the former genus. The forked lamina of the leaf, and 

 the bracteate scapes, are also characters not found in any Sarracenia. 

 From Heliamphora it is still more distinct. In that genus the scapes 

 are several-flowered; the flowers are apetalous; the style is entire and 

 not dilated at the summit, and the ovary is 3-celled. The leaves also 

 differ in their greatly dilated orifice, very small lamina, and doubly 

 winged pitchers. 



In the Bibliotheque Universelle de Geneve, Archives des Sciences 

 Physiques et Naturelles, 1854, p. 255, are some observations on this 

 genus, by Alph. De Candolle. He points out a remarkable character 

 in Mr. Sprague's admirable figure, which I have not mentioned in my 

 description, viz., that the five cells of the ovary are represented as 

 alternate with the sepals, while in Sarracenia purpurea they are oppo- 

 site. Contrary symmetries are rare in nearly allied genera, but M. 

 De Candolle has discovered some such among Campanulacece, He 

 nevertheless inquires whether Mr. Sprague may not have mistaken 

 the structure of Darlingtonia in this particular. Although I am un- 

 willing to sacrifice my only remaining flower of this plant, the frag- 

 ment of a capsule on one of the specimens of the Exploring Expedi- 

 tion enables me to verify the correctness of Mr. Sprague's analysis. 

 The axis, with portions of the dissepiment, and the bases of the sepals 

 remain, and the cells are alternate with the sepals. 



[This plant, — one of the most interesting botanical discoveries of 

 the Expedition, — has been brought into cultivation since the above 

 was written, and has been more than once illustrated. It is none the 



