114 



Vail : Studies in the Lkguminosae 



orbicular, 4—6 cm. long, 4-S cm. wide, commonly broadest above 

 the middle, broadly rounded and sometimes slightly retusc at the 

 apex, narrowly subcordate at the base ; lateral leaflets obliquely 

 obovate-oblong ; venation reticulated : upper racemes sessile, 2-4 

 cm. long, the other on peduncles 2-4 cm. long: bracts lanceolate, 

 3—4 mm. long, slender: calyx 9— ic mm. long; segments foliace- 

 ous, exceeding the glabrous yellow corolla. Legume not seen. 



Dry sandy soil, Orange County, Florida, F. L. Lewton, July 

 7, 1894. 



Allied to Z>. MicJiauxii Vail, from which it differs in the trifo- 



liolate, abnormally large leaves, which are notably broadest above 



the middle and with narrow and less prominent subcordate bases. 



The calyx and corolla are also smaller than those of D. MichaiLxii 



w 



and the racemes are longer. 



Type in the Herbarium of Columbia University. 



II, Dolicholus latifolius (Nutt.) 



RhyncJiosia latifolia Nutt. ; Torn & Gr. Fl. N. Am. i: 285. 



1838. 



1840. 



PJiascohis latifolius Eat. & Wright, N. Am. Bot. 353. 



In dry soil, Missouri to Texas and Louisiana. 



Very variable. A low erect or sub-erect form with short or 

 sub-sessile racemes has been collected in Texas by Lindhcimer 

 and in Missouri by B. F. Bush and may possibly be distinct. 



* 



1 2. Dolicholus simplicifolius (Walt.) 



ifoliii ui simplicifi 



i;88. 



Glycine tonioitosa var. monophylla Michx. Fl. Bor. Am. 2: 6^. 



1803. 



if^ 



I8I4. 



iph) 



115- 



1818. 



iplicifc 



Fll. J 



Phila. i: 371. 



1818. 



Glycine si))iplicifolia Ell. Sk. 2: 234. 1825, Not H. B. K. 



Rhynchosia rcniformis DC. Prodr. 2: 384. 



1825. 



Rhynchosia tomcntosa var. niojwpliylla Torr. & Gray, i: 284. 



1838, 



Phaseolus rcnifonnis Fat. & Wri^jht, N. Am. Bot. 353. 



1840. 



Psoralca alnifolia Bert. Mem. Acad. Sci. Bolog, 2: 274. 1849. 



