12 ON TWO NEW PLANTS. 
Characters of Two New Puanrs discovered in British 
Guiana; by the CHEVALIER Rosert H. ScHOMBURKGK, 
K.R.E., Honorary Doctor of Philosophy of the Un 
versity of Konigsberg, &c. &c. 1 
1. ALEXANDRA IMPERATRICIS, Schomb. 
. Nat. Ord. Leguminose. 
ALEXANDRA, Schomb. Gen. nov. Cal. campanulatus, 
carnosus, amplus, breviter et latissime 5-dentatus, dentibus - 
superioribus majoribus. Discus fere ad medium calycis 
adnatus. Petala estivatione papilionacea, crassa, subequi- | 
longa: Vexillum bilobum, apice revolutum: Ale et petala - 
carinalia consimilia, æqualia, oblonga, basi parum angustata. | 
Stamina 10 vix inæquilonga, omnia fertilia, libera petala | 
equantia; filamentis crassis; antheris linearibus, versatilibus. | 
Ovarium longiuscule stipitatum. Ovula plurima. Stylus 
incurvus, acutus, summo apice ininutissimo depresso stig- : 
matosus. Legumen elongatum, compressum, lignosum, bi- 
valve, intus biloculare. Semina crassa, compressa, subor- 
bicularia. Embryo rectus:  Cotyledones  crasso-carnosæ, 
lateraliter compresse. Plumula inconspicua. Radicula bre- 
vissima, l 
Genus e tribu Sophorearum, Diplotropodi et Dibrachio 
quodammodo affine ; sed abunde distinctum, floribus amplis, 
staminibus subæqualibus, ovario longe stipitato, legumine et 
inflorescentia. : 
Alexandra Imperatricis, Schomb. UH 
Has. British Guiana; between the 5th and 6th parallel of 
north latitude, along the southern tributaries of the river 
Cuyuni, chiefly on the banks of the Wanamu. I under- 
~ stand it is likewise found near the River Pomeroon. | 
A tree from 90 to 120 feet in height, with a trunk 5 feet 
in diameter; but who shall attempt to describe the beauty 
of the flowers, so gorgeous that no painter can do justice to 
them! These spring in great number em the pe | 
