474 PHANEROGAMIA. 



Hab. Brazil, near Rio Janeiro. (The leaves of one specimen are 

 in a monstrous state, probably from the sting of insects.) 



2. PlPTADENlA MACROCARPA, Benth. I. C. 



Hab. Brazil ; with the preceding species. 



105. ALGAROBIA, Bentli. 



Algarobia, Benth. PI. Hartw. p. 13 ; Torr. & Gray, Fl. N. Anier. 1, p. 399 j Gray, 



PL Lindh. 1, p. 35 ; & PI. Wright. 1, p. 60. 

 Prosopis, § Algarobia, Benth. Mimos. in Hook. Jour. Bot. 4, p. 348. 



1. Algarobia juliflora. 



Mimosa juliflora, Swartz, Prodr. Fl. Ind. Occ. p. 85. 



Prosopis juliflora, DC. Prodr. 2, p. 447; Benth. in Hook. Jour. Bot. 1. c. 



P. affinis, Spreng. Syst. Veg. 2, p. 326. 



Hab. Rio Negro, North Patagonia; common on the plains. In 

 fruit: with foliage also of a small-leaved form, the Prosopis ditlcis, 

 y. australis, Benth. 1. c. 



The pods as well as the foliage so closely resemble those of our 

 Texan and Mexican Mezquite (A. glandidosa, Torr. & Gray) as to 

 render it most probable that we have one polymorphous species, 

 extending from Arkansas to Patagonia, as Mr. Bentham suggests. 

 In either case, the plant before us must bear the name of juliflora. 

 The fruit shows well the character of the genus, namely, the separa- 

 tion of the endocarp into a series of detached and closed joints, or 

 pips, each containing a seed. 



106. STROMBOCARPA (Bentti. sub Prosop.). 



Prosopis, § Strombocarpa, Benth. Mimos. in Hook. Jour. Bot. 4, p. 351, excl. sp. 

 Strombocarpa, Gray, PI. Wright. 1, p. 60. 



