352 BENTHAM ON MIMOSEjE. 



17. p. ahbreviata (sp. n.), ramulis foliisque minute viscido- 

 pubevulis glabratisve, stipulis spinescentibus subulatis, folio- 

 rum petiolo brevissimo, pinnis unijugis, foliolis 10 — 15-jugis 

 minimis appi'oximatis oblongis obtusissimis, spicis ovatis 

 globosisve, pedunculo folium sequante, cal3'ce corolla vix 

 dimidio breviore, staminibus corolla duple longioribus, legu- 

 mine dense spiraliter contorto. — San Jago, Tweedie. 



18. P. reptans (sp. n.), ramulis foliisque minute viscido- 

 puberulis glabratisve, stipulis spinescentibus subulatis, folio- 

 rum petiolo brevissimo, pinnis unijugis, foliolis 6 — 10-jugis 

 minimis approximatis oblongis obtusissimis, spicis globosis, 

 pedunculo folio longiore, corolla calyce plus duplo longiore, 

 staminibus breviter exsertis, legumine dense spiraliter con- 

 torto. — S. America, Tweedie, with the label " Mortworta of 

 Cordova, used as a cure in Dysentery," and apparently the 

 same species in Berlandier's Texas collection, n. 2013. 



19. P. strombidifera, glaberrima, stipulis spinescentibus 

 subulatis, foliorum petiolo brevi, pinnis unijugis, foliolis 4 — 

 C-jugis oblongo-linearibus obtusissimis subdistantibus, spicis 

 globosis, pedunculis folio longioribus, corolla calyce duplo 

 longiore, staminibus breviter exsertis, legumine dense spira- 

 liter contorto. — Acacia strombidifera, Willd. Spec. iv. 1055. 

 — Mendoza, Gillies, 



P. microphylla, Humb. et Kuntli, may perhaps be a spe- 

 cies o^ Acacia. P. dubia of the same authors, described from 

 a single leaf with Humboldt's notes on the pod, may be 

 a Pithecolohium. P. dubia, Guillem. et Perrot, described 

 also from leaves and pod only, appears to me more likely to 

 be an Acacia than a Prosopis. P. globosa, and P. ^P^^' 

 droides of Gillies, belong to Mimosa, Sect. Ameria. 



XIII. DiCHUosTACHYS, DC. Wight et Am. — Caillea, 

 Guillem — Desmanthi, Sect. DC. Prodr. 



Flores in spica biformes, superiores hermaphroditi sessiles 

 Entadcc, inferiores neutri calyce corollaque ut in hermaphro- 

 ditis, filamenlis 10 longis filiformibus anantheris, ovarii rudi- 



