SCHOMBURGK'S GUIANA PLANTS. 83 
acutus, stigmate minuto.—Species unica: JD. Paraensis. 
Arbor? Rami glabri. Stipulas non vidi. Folia glabra 
abrupte v. impari-pinnata. Petiolus subteres, semipedalis. 
Foliola 2-3-juga petiolulata, pleraque opposita, ovata, obtuse 
acuminata, 3-5-pollicaria, basi rotundato-subcordata, pen- 
ninervia, coriacea, supra nitida. Panicula terminalis, sub- 
cymosa, foliis brevior, multiflora. Pedicelli 4-6-lin., uti rachis 
panicule ferrugineo-tomentosi. Nec bracteas nec bracteolas 
vidi. Calycis tubus subnullus. Sepala 4 lin. longa concava, 
subcoriacea, intus glabra (colorata?), extus adpresse ferrugineo- 
pubescentia. Petala 2 exteriora antica cum sepalis diutius 
persistentia et illis adeo similia ut calycem 5-sepalum haberes, 
tamen e basi interiore calycis oriuntur et angustiora et minus 
coriacea sunt. Vexillum 4 lin. latum stipite sesquilineari. 
Ale inter formas vexilli et petalorum inferiorum mediz. 
Stamina glabra. Anthere 2 lin. longe, 14 lin. crassz, 
biloculares, filamento altero 1} lin. altero fere 4 lin. longo. 
Ovarium tomentosum, apice attenuatum, stylo glabro. Legu-. 
men paullo post anthesin subovatum evadit, nervo utrinque 
notatum ; adultum non vidi. ; x 
TRIBE SwARTZIEZX. 
The few species of Swartzia first known, appeared so dif- 
ferent from any other genera then described, that they have 
hitherto been generally considered as forming a distinct sub- 
order among Leguminose; but the addition of four genera, 
and a considerable number of species, of which forty-three 
or forty-four are now known, seems to have determined the 
place of the group as one of the tribes of Cesalpiniee. In the 
three genera Martiusia, Zollernia, and Allania, in which the 
number of petals is complete, although the zstivation be very 
irregular, I have never seen it papilionaceous. “Usually one 
_ or both the lateral petals is outside, sometimes, however, the 
. Upper petal overlaps one of them on one side; and, in one 
_ flower, I found the upper petal entirely outside, as in Papi- - 
_ lionacez, but then the others regularly overlapped each other 
by one side. All these irregularities are peculiar to Cesal- 
