104 DIADELPaiA. DECAXDKTA. 



small. Calix and leaves g-landuloua. All the larger leaves 

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



8. * Onobrijchis. -tem tall and smooth; leaves ternate, 

 leaflets ovate-lanceolate, somewhat pubescent; racemes 

 (axillarv) long- pedunculate; flowers secund; leg-ume subc;- 

 vate, muricate, smooth; root flagellate. II a b. On the banks 

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

 siana. Oss. Stem 3 to 5 feet hig-h, brownish; leaves like 

 sn Heihjsariun which it greatly resembles; racemes 6 in- 

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

 calix, black, l-seededj and extremely rough with tuber- 

 cles. Perhaps a tr.l'oliate Ouodnjchis: the flowers I have 

 not seen, altiiough 1 have had the plant cultivated in the 

 neighbourhood of London. Perhaps P. Eeilvsaroides of 

 ]Muhl. Catal. 



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

 simple, very remote, linear lanceolate, radical oblong- 

 ovate; spike's oblong, pedunculate, shorter than the leaves 

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

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

 Dr. Kaldwyn. 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. Spike shortly pedunculate, rather dense; 

 flowers pedicellate, nearly bUie, the vexillum finely veni- 

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

 produced. Legume 1-seeded, even. 



With very few exceptions this genus is indigenous to 

 J^orth America and the Cape of Good Hope. 



503. MELILOTUS. Tournefort 



Flowers racemose. — Calix tubulous, 5-tootli- 

 ed. Carina simple, siioi'ler than the wings and 

 vexillum. Legume as long as the calix, rugose. 



Species of Trifolhan. L. which they resemble exactly 

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

 ers not capitate. 



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

 lized or indigenous in the state of New-York. /3. all/a. 

 Stem very tall, flowers white. Naturalized or indigenous 

 in the lower part of the state of Delaware. 



2. *Psoraloides. Trifolium Psoraloides. Walter. Psoralen 

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

 oblong-lanceolate, entil-Cj flowering raceme partly oblong, 



