104 DIADELPHIA. DECTANDRIA. 



smnll. Callx and leaves glandulous. All the larger leaves 

 in 7's, the upper only in 5's. 



8. * Onob^^chis. > tern tall and sraootli; leaves ternate, 

 leaflets ovate-lanceola»^^e, soniewhat ptibesceii'.; racenics 

 (axillary) long pedunculate; flowers sccund; legume subo- 

 vate, murlcate, smooth; root fiagellate. H ab. On the banks 

 of the river Merrimek, a few miles from St. Louis, Loui- 

 siana. Obs. Stem 3 to 5 feet higli, brownish; leaves like 

 an Hedjsarnvi which it greatly resembles; racemes 6 iis- 

 ches long or more; legumes on one side, longer than the 

 calix, black, 1-seeded, and extremely rough wiih tuber^ 

 cles. Perhaps a triloliate Onobrijchis: the flowers 1 have 

 not seen, although I have had the plant cultivated in tlie 

 neigl'.bourhood of London. Perhaps P. Hedusaroides of 

 Muhl. Catal. 



9. * virgata. Nearly smooth; stem striate, virgate; leaves 

 simple, very remote, linear lanceolate, radical oblong- 

 ovate; spikes oblong, pedunculate, shorter than the leaves 

 (axillary); bractes long and subulate, deciduous. Hab, 

 in West Florida between St. Mary's and Satilla river. — 

 Dr. Baldwyn. Obs. Root perennial. Stem herbaceous, 

 about 2 feet high, simply branched from the base. Leaves 

 a span apart, a little pubescent as well as the spike in an 

 early stage, 2 to 3 inches long and acute, uppermost only 

 2 or 3 lines wide. Spikeshortly pedunculate, rather dense; 

 flowers pedicellate, nearly blue, ttie vexlUum finely vein- 

 ed. Cahx 5-cleft, glandulous, lower segment a little 

 produced. Legume 1-seeded, even. 



With very few exceptions this genus is indigenous to 

 North America and the Cape of Good Hope. 



503. MELILOTUS. Tournefort 



Flowers racemose. — Calisc tubulous, 5-tootIi- 

 ed. Carina simple, shorter tlian the wings and 

 vexillum. Legume as long as tl^e calix, injgose. 



S-pecies of TrifoUum. L. which they resemble exactly 

 in habit, but the stem is generally erect, and the flow- 

 ers not capitate. 



Species. 1. M. officinalis. Flowers yellow. Natura- 

 lized or indigenous in the state of New-York. j3. alba. 

 Stem very tall, flowers white. Naturalized or indigenous 

 in the lower pait of the state of I^elaware. 



2. *Psoraloldes. Trifoliiim Psoraloides. Walter. Psoralea 

 Jifelilotoides. Willd. sp. pi. Pubescent, stem erect; leaflets 

 oblong-laiice^late,.entirej flowering raceme partly ablong. 



