334 DiADELPHiA DECANDRiA. Aescliynomeiie, 



most parts, the parts above the water contract to about a third 

 the thickness of those that are immersed, anil are covered 

 with smooth, shining, green bark ; height of the whole plant 

 from six to twelve feet, the relative proportion of the immersed 

 and exposed parts depends on the height of the inundation. 

 Leaves sessile, abruptly pinnate, linear, from six to twelve- 

 inches long, horizontal, courting the solar light through the 

 day, and drooping in its absence. Leajlels generally oppo- 

 site, sessile, from ten to thirty pair, tapering a little from the 

 base, where they are broadest, to the apex, rounded at both 

 ends, with a bristle-like point, smooth above, and having a 

 iew hairs below, from an inch, to an inch and a half long, and 

 three-eiohths of an inch broad at the base. Petioles swelled at 

 the glandular base, channelled ; channel hairy. Stipules half 

 lanceolate, falling; those of the leailets subulate, permanent, 

 minute. l?«ce//tes axillary, peduncled, solitary, drooping beau- 

 tifully, from eight to twelve-flowered, longer than the leaves 

 which they accompany. Flowers drooping, as large as those 

 of Spanish broom, of a bright yellow, with the back of the 

 banner spotted with distinct, round, purple dots. Bractes, 

 those of the pedicel solitary, those of the calyx two, pressing 

 on it laterally, all are boat-shaped and deciduous. Calyx; 

 coral, Sj-c. as in A. Cannabina. 



5. O. Ulif/inosa. Roxh. 



Annual, diflfuse; leaflets forty pair. Racemes sub-sessile, 

 erect, from six to eight-flowered. Leynme erect, cuspidate. 



It is a native of marshy places near Calcutta, appearing- 

 and flowerin"- in the rains. 



Stems annual, ramous, spreading. Branches sometimes 

 slightly and remotely murexed, as in A. procnmbens, Avhich 

 it resembles much; leaflets from thirty to fifty pair, linear, 

 with a point, and bright red margins, smooth on both sides. 

 Stipules as in the other species. Racemes axillary, sid>-ses- 

 sile, from six to eight-flowered. Flowers short-pedicellecl, 

 approximate. Banner and win(/s yellow ; keel purple. 



