SOUTH AMERICAN PLANTS. 101 
SPECIES DUBIA. 
19. Nierembergia? nana. Nicotiana nana, Lindl. Hort. 
Trans. 6,92. Bot. Reg. tab. 833.—Planta acaulis, czespi- 
tosa; foliis confertis, lanceolatis, longe spathulatis, pilosis, 
ficribus multo longioribus; pedunculis 1 floribus, calyce 
turbinato, glutinoso-piloso, lobis obtusis, corolle tubo 
calyce 2-plo longiori, pilosulo.—Oregon, Rocky Mountains, 
v. 8. in Herb. Hook. 
This plant in no way resembles any species of Nicotiana, 
and as stated by Dr. Lindley, it is difficult to account for its 
having been confounded, with N. multivalvis; in habit it 
greatly resembles the four first species of Nierembergia above 
enumerated, but a better knowledge of the structure of its 
flower, is wanting to point out its true position. The only 
specimen I have seen, exists in the herbarium of Sir Wm. 
Hooker, and that is entirely destitute of inflorescence. 
VESTIA. 
This genus consists only of a single well-known species, 
long since described by many authors, and figured in the 
Flora Peruviana, under the name of Periphragmos fetidus. 
I find, however, many of these recorded features at variance 
with what I have seen, more especially in the figure alluded 
to, where the structure of the capsule and the seed, is very 
inaccurately given. The following is an outline of its generic 
character, according to my own observations. 
Vestia Wild. (Char. emendat.)—Calyxr campanulato-tubu- 
losus, breviter 5-dentatus, dentibus apiculatis, demum 
auctus et capsulam suffulciens. Corolla hypogyna, infun- 
dibuliformi-tubulosa, basi demum circumscissa, limbi 5-fidi 
lobis eequalibus ovatis, zstivatione conduplicatis. Stamina 
5, paulo supra basin in contractionem corolle adnata, ex- 
serta; filamenta e glandula crassa dense barbata orta, 
