A TRIBE OF LEGUMINOSJE, 18 
Commencing with the American or true Triptolemeas, we have 
agroup clearly distinguished on that continent by their very small, 
numerous, strictly cymose flowers always practically dicecious— 
(that is to say, that in the male or barren individuals the ovaries 
have either no ovules or only scarcely percepticle rudiments of 
them, and the flowers all drop off without setting, and in the 
female or fertile ones the anthers are differently shaped from those 
of the males, and probably imperfect)—and by their pod indurated 
and strongly reticulate at the seed-bearing part; and no American 
Species presents any intermediate between these and the Misco- 
lobiums. Passing on to the corresponding Asiatic and African 
forms, we have the D. rimosa and its immediate allies, which have 
precisely the pod of the Triptolemeas and also their inflorescence 
and flowers, except that I always find perfect ovules in the flowers 
even of those individuals in which they never appear to set. This 
series I have designated as the Old-world Triptolemeas (Triptolemea 
geronitogee), characterizing them chiefly by the inflorescence and 
small flowers, with very short claws to the petals, the vexillum 
being usually almost sessile. Some species, however, such as the 
Chinese D. Miletti and the African D. armata, are almost as closely 
connected both in flowers and in fruit with D. sympathetica, D. 
Stocksii, &c. among Sissoas as with the other Z'riptolomeas, so as 
to preclude any definite limitation. Returning to America, there 
remain fifteen species which may be termed American Sissoas, or 
Miscolobiums, including Amerimnum as limited by De Candolle. 
They all agree in the smooth or scarcely reticulated pod, and in the 
More irregular inflorescence and rather larger pod of the generality 
of Asiatic Sissoas, and may be subdivided according to the calyx, 
or to the presence or absence of the tenth stamen. In the corre- 
Sponding Asiatic and African forms the venation of the pod varies 
in different species, and the tenth stamen may be present or absent 
in different; flowers of the same species, and neither of these cha- 
Tacters gives much assistance in their delimitation or distribution ; 
but the distinction between the monadelphous species and those 
Where the staminal tube is split into two equal bundles, affords 
the means of dividing them into two long-recognized groups, the 
Old-world Sissoas and the Dalbergarias; whilst the same cha- 
Tacter is not even of specific constancy among the American 
Species, | 
Ecastaphyllum, от Hecastophyllum as some modern purists 
Would have us write it, consisting but of five species, requires no 
Subdivision, 
