LEGUMIN082E-PAPILI0NACEJE. 



L'l. 



AracJi'm hypoycea (Pea-)inf). 



Fig. 184. 



Seed. 



Fig. 185. 



Longitudinal 

 section of seed. 



of the filaments dilated. Here belong the five genera Coronilla, 

 Ornithopus, Hammatolobium, Scorpiurus, and Hippocrepis. 



The subseries Styhsanthcce comprises the three genera Stylosanthes, 

 Zornia, and Cliapmannia, formed of 

 herbaceous or scarcely suffrutescent 

 plants, with exstipellate paucifoliolate 

 leaves and spicate or capitate, rarely 

 racemose, flowers. The stamens are 

 monad elphous, forming an unslit tube, 

 and five of them are shorter than the 

 rest, which have versatile anthers. 



The Earthnuts {Ar acids; Fr., Ara- 

 chide), have the general characters 

 of Stylosanthea ; 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. 181, 185). 1 



Desmodiea. forms the last group of this series, remarkable for its 

 trifoliolate leaves, whose lateral 

 leaflets (fig. ISO) may be much 

 reduced or even altogether ab- 

 sent. Here belong the genera 

 Desmodium, Pseudarthria, Pycno- 

 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 Onohrychis ; the 

 genus Ougeinia, by its leaves and 

 the form of its floral receptacle connects this series with Phaxeolca. 

 At the same time its fruit is articulated, composed of one or more 

 flattened woody joints, each resembling the entire fruit of the 

 Dalhergiea. 



Fig. 186. 

 Leafy branch (|). 



1 After this genus comes ArthrncUanthus IT. edition, hut which will he found in its place at 

 Bn., given only in the Addenda in the French n. 153a in the following Genera. 



