NEOPHYTON. 53 



343. Drepilia rhombifolia Raf. Cytisus do 

 Pursh. Thermia Nut. Thermopsis rhombif. 

 Hooker fl. bor. t. 47. Th. oregonensis Dec- 

 leaves petiolate rhomboidal silky beneath, sti- 

 pules rounded foliaceous, raceme subsessile in- 

 terrupted — Missouri and Origon, my specimens 

 are from Bradburry, roots creeping, stems pe- 

 dal angular. 



This will conclude our Leguminose plants of 

 Sophora tribe, the Virgilia is a tree and my 

 N, G. Cladrastis, the Soph, sericea is subdia- 

 delphous forming my N. G. Vexibia. I shall 

 now give another intere<!)ting monograph of our 

 Crotalarias. 



244. CROTALARIA. Linneus had only 23 

 sp. we have now about 150 ! but many hetero- 

 genous sp. are blended even by Decandole, see 

 rny flora telluriana for N. G. meantime most of 

 our N. American sp. form a very natural group; 

 our Authors have only 5 mostly deemed var. of 

 C. sagittalis by Mx. some ascertained by Pursh 

 and Elliott, but misnamed, since sagittalis^ le- 

 vigata and parviflora are exotic plants. I 

 shall revise them and increase to 10 sp. having 

 all simple leaves and long peduncles opposite to 

 leaves, bracteate commonly multiflore, stem 

 often winged by decurrent stipules, like a re- 

 versed arrow, mostly annuals, flowers bibrac- 

 teate yellow estival. They must form a sub- 

 genus locaulon (arrow stem) with the similar 

 kinds of South America &c. 



345. Subg. loeAULON Raf. calix campanul. 

 deeply 5fid subequal subbilabiate, equal to pe- 

 tals papil. Vexillum obcordate reflexed, keel 

 acuminate longer than wings, stamens 10 mo- 

 nadelphous at base, split behind, filaments al- 

 ternate longer bearing 5 round anthers com- 



