LEGUMINOSZ-PAPILIONACEZ. 215 
of the filaments dilated. Here belong the five genera Corouilla, 
Ornithopus, Hammatolobium, Scorpiurus, and Hippocreyis. 
The subseries Stylosanthee comprises the three genera Stylosanthes, 
Zornia, and Chapmannia, formed of 
herbaceous or scarcely suffrutescent Arachis hypogaea (Ped-nut). 
plants, with exstipellate paucifoliolate 
leaves and spicate or capitate, rarely 
racemose, flowers. The stamens are 
monadelphous, forming an unslit tube, 
and five of them are shorter than the 
rest, which have versatile anthers. Se 
The Earthnuts (Arachis; Fr., Ara- Fig. 184. Fre. 185. 
, ‘ Seed. Longitudinal 
chide), have the general characters coy on oe etl 
of Stylosanthee ; but may be placed in 
a separate category because their indehiscent fruits ripen under- 
ground, and though contracted between the seeds, never separate 
into joints. The radicle is straight (figs. 184, 185).’ 
Desmodiee forms the last group of this series, remarkable for its 
trifoliolate leaves, whose lateral : 
leaflets (fig. 186) may be much sahil lie 
reduced or even altogether ab- : 
sent. Here belong the genera 
Desmodium, Pseudarthria, Pyeno- 
spora, Uraria, Lourea, Mecopus, 
Alysicarpus, Phylacium, Hallia, 
Eleiotis, Leptodesmia, Cranocar- 
pus, Lespedeza, and Ougeinia. In 
the last few of these genera 
the ovary usually contains only 
one ovule; so that the fruit is 
short, one-seeded and indehis- 
cent as in Onobrychis ; the 
genus Oxgeinia, by its leaves and 
the form of its floral receptacle connects this series with Phaseolee. 
At the same time its fruit is articulated, composed of one or more 
flattened woody joints, each resembling the entire fruit of the 
Dalbergiee. 
Fie. 186. 
Leafy branch (3). 
1 After this genus comes Arthroclianthus H. edition, but which will be found in its place at 
By., given only in the Addenda in the French n. 158q in the following Genera. 
