ACACIA ARABICA. 31 
LEGUMINOS A, 
ADR. JUSSIEU. 
THE BEAN TRIBE. 
Fapacexz.—Lindley. 
The Bean tribe, or Leguminous plants, are generally regarded as presenting marked affinities. Although these 
are marked in the entire family, yet there is so much dissimilarity in groups of which it is composed, as to admit of 
subdivision. . 
EssenT1aL Cuar.—The plants composing it may be either herbs, shrubs, or trees. Their eaves are alternate and 
compound, sometimes doubly so, accompanied with two stipules. Flowers variously arranged. Calyx free, with five 
divisions, unequal usually, the odd segment anterior. Petals inserted into the calyx, sometimes into the receptacle, 
unequal, with the odd petal posterior, as numerous as the segments of the calyx; by abortion fewer. Stamens double 
the number of the petals, or more numerous, inserted with the petals, free; or the filaments connected, monadelphous 
or diadelphous. Ovary simple, superior, becoming a legume or tomentum. Legumes two-valved, membranous, or 
coriaceous, dehiscent or indehiscent. Seeds numerous, fewer by abortion. Cotyledons foliaceous or fleshy. Embryo 
straight or curved. From the dissimilarity above presented, the necessity is apparent of arranging the plants comprising 
the family in suborders, which are MimosE#, CHSALPINEZ, and PapmLioNaceZz. ; 
Many of these plants, in consequence of fecula and nutritious matter in the seeds, are cultivated for their esculent 
cena A great range of medical activity, however, is to be met. with, which is most easily pointed out in the 
uborders. | 
MIMOSE A. 
R. BROWN. 
MIMOSIADS. 
ite “SOE ne unisexual, regular, spiked or capitate. Calyz free, four to five-parted. Petals equal 
ee : “ — Hs et calyx, alternate with them, inserted into the receptacle, free or united. Stamens 
.. 2 1ypogynous, monadelphous, numerous. Legume usually bivalved, one-celled or divided b iti 
a oie ot Straight ; cotyledons large. : : a at ee 
plants comprised By this suborder are, for the most part, natives of the hotter portions of the earth, a few are 
in northern, but a la titer portion 
are gum and astringent rites in south temperate regions. The characteristic principles which they secrete 
ACACIA ARABICA. 
WILLDENOW. 
AcActA NtLoTICA Deli 
“a a hale. Mimosa araBica.—Rozburgh. a. 
Gen. “hia Se olygamia, Moncecia. ~~ 
lowers polygamous. Calyz four to five-toothed. Petals four to five, either free or cohering to 
