SOUTH AMERICAN PLANTS. 81 
what flattened above, and of a glaucous hue. The flowers 
are sessile, and arranged ina branching few-flowered corymb ; 
the calyx is 3 lines long, the corolla 8 lines in length, funnel- 
shaped, about 2 lines in diameter, with five rather short, 
erect teeth; the filaments, of unequal length, are fixed below 
the middle of the tube, have a few recurved hairs at base, 
but are glabrous above ; the ovarium, which rises on a short 
glandular column, is glabrous, as well as the long, slender, 
and slightly incurved style; the stigma is somewhat larger, 
2-lipped, and inclined; the capsule is shorter and thicker 
than in the preceding species, being half invested by the 
persistent calyx, about 6 lines long, 2 lines in diameter, and 
somewhat curved; there are two seeds matured in each 
cell, which are broadly winged, with a slender longitudinal 
keel. The form of the embryo corresponds with that of the 
first described species. 
CESTRUM. 
During my residence in Rio de Janeiro, I found in its 
neighbourhood and in the Organ Mountains, several species 
of Cestrum; and as I do not find them recorded, I will here 
offer a short diagnosis of their characters. In order to explain 
the views before proposed, in regard to the distribution of — 
the Rectembryee, and as a term of comparison between this 
genus and others included in this sub-order, I will first give a 
somewhat amended character, in accordance with observa- 
tions made upon several species that I examined in the living 
state. Mi St 
Crstrum, Linn. (char. emendat.)—Calyz parvus, tubulosus, 
5-fidus, vel 5-dentatus, persistens. Corolla hypogyna, in- 
fundibuliformis, tubo elongato, superne ampliato, limbo 
5-partito, patenti vel revoluto, eestivatione conduplicativo. 
Stamina 5, medio corolle tubo inserta, inclusa, filamentis 
simplicibus, vel basi dente auctis, antheris longitudinaliter 
dehiscentibus. Ovarium ovatum, breviter stipitatum, sti- 
pite vix glanduloso cyatho (corolle reliquo) circumdato, 
M 
