154 CONTRIBUTIONS TO 



equal oblong segments of the length of 2 lines, with deep 

 inflected eestivation ; both the calyx and corolla are smooth 

 inside, and are covered on the outside with dense stellate 

 tomentum. The stamens are included, the filaments rise from 

 about the middle of the tube, out of as many prominent 

 longitudinal ridges, which are retrorsely pilose, they are 

 quite smooth above j the anthers are deeply cordate, 2-lobed, 

 fixed on the apex of the filament, the lobes being oval 

 and slightly scabrid. The pollen grains are spherical 

 3-grooved, with alternating convergent lines. The ovarium 

 is ovate, very sericeous, surmounted on a distinct glabrous 

 stipes, which is surrounded by a short tubular cup, being 

 a persistent portion of the corolla, which here breaks off 

 by a horizontal line as I have described in Alibrexia, a feature 

 I find to be apparent in nearly all the species hitherto placed 

 in the Cestrinece that I have examined. The style is columnar, 

 erect, sulcated, slightly but distinctly scabrid in its entire 

 length, and is longer than the corolla ; the stigma is bilabiate, 

 the upper lip being erect and longer than the other, which is 

 somewhat declined. The capsule is curved, cylindrical, 

 4-grooved, about double the length of the persistent calyx, 

 smooth, bursting by four nearly equal fissures that extend 

 half way down. They usually contain two or four seeds 

 in each cell, imbricate in two series ; they are oblong, com- 

 pressed, winged and keeled, much in the same manner 

 as in Metternichia, only smaller and broader in proportion ; 

 the cavity containing the embryo is about 2 lines long Jbne 

 broad, the inner membrane remains attached as a lining 

 to the cavity, the albumen, which entirely fills the cell, 

 is thin and fleshy, and encloses an embryo of the same 

 cylindrical shape j this is nearly straight, slightly sigmoid in 

 one direction, and a little curved in the other, the cotyledons 

 are not broader than the radicle, are semiterete and some- 

 what compressed, and are about half the length of the 

 inferior radicle.* 

 2. Sessea dependent, R. & P., Flor. Peruv. 2, 9, tab. 116.— 



•This species, with details, is shown in Plate 15 of the " Illustrations of 

 South American Plants." 



