BENTHAM ON xMlMOSE.^. 359 



Species numerosae hie in sectiones tres distribuuntur: — 



I. EuMiMOSA, staminibus numero petalis cequalibus, legu- 



minis valvulis articulatis v. indivuis. 



II. Habbasia, staminibus numero petalorum duplis, legumi- 



nis valvulis articulatis. 



III. Ameria, staminibus numero petalorum duplis., legumi- 



nis valvulis indivisis. 



Sect. I. Euimimosa, DC. 



Flores tetrameri, in floribus paucis 5 — G-meri, in specie- 

 bus perpaucis 3-meri. Stamina numero petalorum aequalia. 

 Legumen oligospermum {saepius 2— 4-spermum), valvulis 

 in avticulos secedentibus vel indivisis. Herbse, sufFrutices v. 

 frutices, rarissime arbores. Petioli eglandulosi. Pinnae in 

 plerisque unijugae v. subdigitatim approximatae, in paucis 

 plurijugae, imo rarius multijugse. Foliolum intimum jugi 

 infimi cujusve pinnae ssepius multo minus v. omnino deficiens. 

 Calyx minutus, subinconspicuus vel paleaceo-ciliatus aut 

 pappiformis. Corolla membranacea, gamopetala, in Lepidotis 

 crassior. Leguminis margo setosus v. nudus nee simplici 

 serie uncinato-aculeatus. — Species omnes Americanse. 



§ 1. Sensitive. Pinnae unijugae. Foliola bijuga, majuscula, 

 basi dimidiata, plus minusve marginata et appresse ciliata, 

 interiore infimo minimo basi subaequali. Pedunculi soli- 

 tarii v. gemini, inferiores axillares, superiores racemosi. 

 Flores capitati in omnibus speciebus plerique tetrameri, 

 rarius hinc inde pauci pentanieri. 



The first eight of the following species, not all perhaps 

 really distinct from each other, all answer to the Linnaean 

 character of M. sensitivaj the M. albida, and M.foribunda, 

 are usually to be found in gardens under this name, whilst it 

 is probable that one of the Brazilian ones was that which 

 Linnaeus had specially in view. As each one of these spe- 



