116 



Distr. — New Mexico, Mexico and throughout South America. 



XX Herbs erect or ascending. 



* Loment sessile in the calyx, or nearly so. 



II Leaflets long, linear, i-foliolate ; joints of the loment oval. 



28. Meibomia graminea (A. Gray). 



Desmodimn gramineinn, A. Gray, PI. Wright, ii. 46 (1853). 

 Meibomia graminea, O. Kuntze, Rev. Gen. Plant, i. 98 (1891). 

 Distr. — New Mexico and Mexico. 



II II Leaflets linear, lower leaves i-foliolate, oval or deltoid ; joints of the loment 

 nearly orbicular. 



29. Meibomla. Nova-Mexicana (A. Gray). 



Desmodinm Neo-Mexicamim, A. Gray, PI. Wright, i. 53 (1852). 

 Desmodium exiguum, A. Gray, PI. \Yright. ii. 46 (1853). 

 Meibomia Neo-Mexicana, O. Kuntze, Rev. Gen. Plant, i. 198 



(1891). 

 Distr. — Texas, New Mexico, Arizona and Mexico. 



II I II Leaflets linear to linear-lanceolate ; joints of the loment orbicular, twisted. 



30. Meibomia Bigelovii (A. Gray). 



Desmodium Bigelovii, A. Gray, PI. Wright, ii. 47 (1853). 

 Desmodium Neo-Mexicana, var. glabellum, A. Gray, PI. 



Wright, ii. 47 (1853). 

 Desmodium Neo-Mexicanum, var. Bigelovii, S. Watson, Biblio. 



Index A.m. Bot. i. 217 (1878). 

 Meibomia Bigelowii, O. Kuntze, Rev. Gen. Plant, i. 197(1891). 

 Distr. — New Mexico and Mexico. 



II II II II Leaflets ovate, 1-6' long, loment much twisted, bracts and stipules con- 

 spicuous. 



31. Meibomia tortuosa (Sw.). 



Hedysariim tortuosum, Swartz Fl. Ind. Occ. iii. 1272 (i8o6). 

 Desmodium tortuosum, DC. Prodr. ii. 332 (1825). 

 Meibomia tortuosa, O. Kuntze, Rev. Gen. Plant, i. 198 (1891). 

 Distr. — Florida and West Indies. 



II II II II II Leaflets large, mostly i-foliolale, loment much twisted. 



31. Meibomia annua (A. Gray). 



Desmodium anuuum, A. Gray, PI. Wright, ii. 46 (1853). 



Meibomia annua, O. Kuntze, Rev. Gen. Plant, i. 197 (1891). 



This species has been erroneously referred to D. spirale. 

 There is a doubt as to the latter occurring in the United States. 



