160 Mr. Bentham on the Structure and AJfïnities 



petiolis abbreviatis, foliolis obovatis oblongisve obtusis muticis basi an- 

 gustatis ligidis niarginatis reticulatis glabris subciliatis. 



Ad Rio Pardo Brasiliîe. (v. s. comm. a Mus. Acad. Petrop. cum fl. ? ). 



Radix apice in tuberculum oblongum inflata. Sfipulœ infimse (sub terra 

 natœ ?) aphyllte, superiores longœ rigidœ ciliatœ. 



Amongst the above species I have seen the fruit of A. hypogœa only. It is 

 probable that when the legumes are known, better distinctive characters may 

 be founil, or possibly that some of the above may be mere varieties of each 

 other, but as far as my specimens go they appear perfectly distinct. 



Stylosanthes. Linn. 



Flores polygami. Floris Iiermapliroditi sa'pissime sterilis; calyx tubo longo, 

 filiformi, limbo profunde bilabiato, labio superiore 4-fido, laciniis supremis 

 altius connatis, labio inferiore elongato, integro. Corolla fauci calycis in- 

 serta. J^exillum suborbiculare. Alee oblongoe, libérée, leviter transver- 

 sim plicatœ, carina longiores. Carina incurva, subrostrata, apice intégra. 

 Stamina monadelplia. Anthene alternœ subrotundœ, mcdifix<.e ; alternée 

 oblongte, adnata\ Ovarium intra tubum calycis subsessile, minutum,2 — 3- 

 ovulatum. Stylus ad antheras attingens, filiformis. Stigma minutum, rarius 

 subcapitatum (floribus tunc fertilibus ?). Floris fœminei fertilis ; calyx, 

 corolla, et stamina nulla. Ovarium subsessile, erectum, biovulatum. Stylus 

 brevis, uncinatus. Stigma incrassatum, subterminale. Legumen sessile, 

 sœpius biarticulatum, articulis compressis, inferiore nunc sterili stipiti- 

 formi, nunc monospermo secedente, siiperiort; monospermo secedcnte, 

 apice stylo persistente hainato. Semen lenticulari-compressum. Radicula 

 brevis, paruni inHexa. 



Herhœ, sufFruticesve erectte, vel prostratte, ssepe viscosœ. Folia petiolata, pin- 

 natim trifoliolata, foliolis oppositis, cum impari sœpissime distante, rarius 

 inter latcralia subsessili. Stipulce basi petiolo adnatte, striatœ. Stipella^ 

 nulla'. Flores in spicam densam, axillarem vel terminalem sœpius ap- 

 proximati, singuli ad axillam folii vel bracteœ stipularum pari similis bre- 

 viter pedicellati, pedicello bracteee adnato, nunc solitarii 2 — 3-bracteolati, 

 nunc bini altero perfecto altero abortivo stipitiformi, rarius bini utrocpie 

 perfecto. 



