﻿Proso2)is.'] 



MR. G. BENTHAM ON THE MIMOSE^ 



379 



Algarohia of Prosopis. The endocarp appears in both to form articles quite distinct^ although sometimes 

 contiguous. 



7. P. HUMiLis, Gill. ! in Rook, Bot. Misc. ill. 204. Glabra, spinis axillaribus elongatis 



striatis. Polia nulla v. ad petiolum 



■f oliolatuin ' reducta 



Spicae cylindracese 



poll 



8_ 



4 -^a 



li- 



Antlierse vix glandulosse. Legumen compressum, falcatum, o-di-poll 



4-5 lin. latum. 



Sah. Extratropical South America : Pampas of Buenos Ayres, Gillies ; San Jago and 

 Patagonia, Tioeedie. 



Fruticulus suhaphyllus, spinis ssepe poUicaribus ramulisque rigidis sulcato-striatis insignis. Foliorum 

 petiolus dum adest 2-3 lin. longus, apice biaristatus, et supra glaudulam parvam foliola ferens 1-2 

 minima, lanceolata, acutissima. Spinffi saepius geminae, v. altera in spicam mutata. Flores extus glabri, 

 calyce minimo, petalis 1^ v. fere 2 lin. longis, intus apice lanatis. Ovarium subsessilo, villosissimnm. 

 Antherse ssepius eglandulossBj interdum glandulam minutam sessilem detexi. Legumen immaturum valde 

 compressum, marginibus incrassatis, demum utriuque convexum, 8uT)torulosum. 



8. P. SERiCANTHA, Gill.! in Hook. Bot. Misc. iii. 201. — Puberula, apliylla, ramulis 

 erectis rigidis plerisque apice subspinescentibus. Spicoe cylindracese, subsessiles, densse, 



Antlicrte' 



1^ lin. longa. 



l-l-|-pollicares. Plores extus liirsuti. Calyx f lin., petala 



distincte glanduliferse. Legumen rectiusculum, compressum, demum utrinque con- 



vexum, 3-4-p ollicare, 4 lin. latum. 



Scih. Extratropical South America : Province of San Luis. 



Glabra, incrmis 



Sti 



Species dubia. 

 9 ? P. HETEROPHYLLA, Beiitli. I in Hooh. Lond. Journ. v. 82. 



V 



pulse obsoletse. Poliorum petiolus longus, complanatus. Pinnae ad apicem l-2-jug9e, 

 foliolis 12-15-jugis parvis, v. nullae. Spicse subsessiles. Legumen planum, rectum, 4?^- 



pollicare, 5 lin. latum. 



Sab. Extratropical North America ; Sonora alta in Mexico, Coulter. 



Ramuli tenues, subteretes/ albidi. Foliorum petiolus communis 3-7 poll, longus^ linea paullo latior v^ 



angustior, qi 

 cares ferens. 



n 



obscurse 



nervia 



2 lin. longa, acutiuscula^ glabra v. pilis raris conspersa. 

 poUicaris. Legumen adhuc 



Flo 



fructiferae rhachis 1 A 



immaturum 



very 



Dublin, which I have not since seen. It seems doubtful whether it be a Prosoj)is or an Acacia j but it 

 appeared most to resemble in general habit some of the southern species of the former genus. 



^. 



Sectio 4s. Steombocahpa. 



Petala intus apice lanata (excepta P. striata) 

 sum, cochleato-contortum v. gyris numcrosis 



Ovarium villosum 

 spirale, endocarpio v. 



Legumen 



vario (in articulos 



distinctos v. subconnexos incrassato v. continuo v. vix a mesocarpio distincto). Frutices 

 Americani. Stipulte spinescentes basi saepe connatse. Spinoe axUlares desunt. 



A. Gray proposes to reduce the section or genus Strombocarpa strictly to those species in which the 

 endocarp is continous, or scarcely distinguishable from the mesocarp, referring P. torquata and P. abbre- 

 viata to Algarobia ; hut the pod of the latter species is exactly intermediate between the irregularly spiral, 

 ahnost jointed pod, with distinctly articled endocarp, of P. torquata, and the closely spiral one with con- 

 tinuous endocarp of P. strombulifera ; and in other characters, especially in the stipular not axillary 



