peduncled, an inch and a quarter in diameter, solitary 

 or binate, rose-purple, axillary or arranged in a ter- 

 minal, sessile, armed raceme six inches long ; peduncles 

 opposite, stout, half an inch long or longer. Bracts 

 cuneiform, truncate, upper margin spinulosely lacerate. 

 Corolla four-lobed. Filaments rose-red; anthers yellow. 

 Pods an inch long, linear; valves iointed, spinulose. — 

 /. D.H. ' 



Fig. 1, portion of branch with spines, stipules, and portion of a leaf ; 

 2, bracteole; 3, corolla and stamens; 4, pistil : — all enlarged; 5, immature 

 fruit from Prof. Pirotta's figure, of the natural size. 



