BENTHAM ON MlMOSEiE. 401 



margine ciliatis, pedunculis foliolo vix dimidio brevioribus, 

 capitulis oblongo-ellipticis, calycibus abbreviatis vix ciliatis, 

 leguminibus hirsutissimis multiarticulatis. — Affinis 31. aspera- 

 te. Habitus laxior. Aculei pauci. Foliola rigidiora. Pe- 

 dunculi 2 — 3-pollicares. Flores fere glabri, in capitulo 

 duplo longiore quam lato dispositi. Legumen Junius tantuni 

 vidi. Tola planta siccitate nigrescit. — Rio Janeiro, Lhotsky, 

 Burchell, Pohl, Sello^ Gardner. 



149. M.cinerea {YqW. F1. Flum. xi.t. 35? non Linn.), fruti- 

 cosa, procumbens, ramis pedunculisque appressestrigoso-pilo- 

 sis, stipulis ovato-lanceoiatis, pinnis6 — I0-jiigisfolio]is20 — 30- 

 jugis linearibiis ciliatis nudisve, pedunculis folio brevioribus, 

 capitulis globosis, calj'ce minuto, legumine sparse strigoso 

 articulis 4 — 10 latitudine parum brevioribus.— Much of the 

 habit of some of the less hairy forms of 31. asperaia, but the 

 strigse are much closer appressed and more rigid, and the pod 

 is very different, both as to the setse which are few and appres- 

 sed, not erect, and the articles which are nearly as long as 

 broad. Velloso's figure shows the setse between the pinnae 

 rather longer than I have seen them, but appears to be the plant 

 before me. The polyandrous flower is surely a mistake; for 

 the setee, above-mentioned, are characteristic of Mimosa. — 

 Entre Rios, Maldonado, La Plata, etc., Tiveedie; Minas 

 Geraes, Claiissen? (whose specimens are not in fruit.) 



§ 8. Microcephalce. (cfr. char, in diagnosi specifica.) 



150. M. microcephala (Humb. et Bonpl. in Willd. Spec. iv. 

 1039.; Kunth. Mim. 23. t. 8.), fruticosa, inermis, rainis ad- 

 presso-hispidulis, stipulis lanceolatissubulato-acuminatis, pin- 

 nis 20 — 30-jugis, foliolis 20 — 30-jugis, minimis oblongo-line- 

 aribus glabris ciliolatis nudisve, racemis gracilibus aphyllis 

 subramosis polycephalis, capitulis minimis breviter peduncu- 

 latis globosis ellipticisve, calyce minuto, legumine linear! 

 multiarticulato undique strigoso-piloso.— On the Orinoco, 

 Humboldt and Bonpland ; Parime Mountains, Schomburgk. 



Vol. IV No. 32. 3 E 



