Senna. decAndria monogynia. 339 



long and half an inch broad. Petioles channelled, villous, 

 with glands upon them. Stipules semisagittate, both barbs 

 and the apex cuspidate and curved. Racemes axillary, so. 

 litary, much shorter than the leaves. Bractes tern, lanceo- 

 late, the inner two on the base of the pedicel, and much 

 smaller. Flowers of a middling size, pink colour, marked 

 with greenish nerves and veins. Petals nearly equal, three 

 on the upper side and two on the under. Stamina all se- 

 mifertile ; the three lower ones much the longest and with 

 a double curve below the middle, but no swelling as in 

 C. nodosa, and some of the other species, the anthers on 

 the three long filaments, are ovate and erect, all the 

 others are incumbent, with pores at the small end. Lo- 

 ment cylindric, from eight to twelve inches long, and as 

 thick as a man's little linger, covered with a dark brown, 

 torose, somewhat ligneous bark; divided by transverse 

 partitions, into thirty or forty cells, in which is lodged, a 

 soft, white, spongy substance which involves the seeds. 

 Seeds solitary, obovate, size of a small pea. Integuments 

 single, smooth, light brown. Perisperm conform to the 

 seed, soft, and tough, divided to the base into two lobes 

 by the large cotyledons. Embryo straight, green. Cotyle- 

 dons oval-cordate, three-nerved, transversely curved like 

 the letter S. Plumula of two very unequal lobes, the 

 largest pinnatifid ; the smallest a mere point. Radicle 

 roundish, immediately within the umbilicus. 



SENNA. Goert. 

 Ca?i/x five leaved. CoroHrregular, five-petalled. Fer- 

 tile anthers beaked, opening by two pores at top. 



1. S. exigua. R. 



Leaflets two pair, oval. Stipules and bractes filiform. 



Flowers tetrandrous. 



Qq2 



