1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 139 
El Carrizo, Feb. 28, 1906, Pringle 10236 (U. S. Nat. Herb. 
and Mo. Bot. Gard. Herb.). 
Tamaulipas: vicinity of Victoria, Feb. l-April 9, 1907, Pal- 
mer 41 (Mo. Bot. Gard. Herb. and U. S. Nat. Herb.). 
Vera Cruz: vicinity of Pueblo Viejo, 2 kilometers south of 
Tampico, Feb. 10-25, 1910, Palmer 366 (Mo. Bot. Gard. Herb.). 
2a. Var. Berlandieri (Gray) Payson, new comb. 
Synthlipsis Berlandieri Gray, Bot. Mex. Bound. Surv. 34. 
1859; Small, Fl. Southeastern U. S. 468. 1903, ed. 2, 468. 
1913. 
This differs from the species in being less hirsute throughout 
and in having no simple trichomes whatever on the pods. 
Distribution: From Corpus Christi, Texas, to Matamoros, 
Mexico. 
Specimens examined: 
Texas: Corpus Christi, March 5-12, 1894, Heller 1405, in 
part (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.); Corpus 
Christi, March 31, 1905, Tracy 9348 (U. S. Nat. Herb. and Mo. 
Bot. Gard. Herb., in part). 
Mexico: 
Tamaulipas: Matamoros, Feb., 1832, Berlandier 3102 (Mo. 
Bot. Gard. Herb.); Matamoros, Berlandier 3017 (U. S. Nat. 
Herb.). 
L. lasiocarpa and its variety have been maintained in herbaria 
and literature for many years under two generic names, Les- 
querella and Synthlipsis. Since its pods are flattened contrary 
to the narrow partition it has been associated with Synthlipsis 
Gregg from which in other respects it is quite different. It has, 
indeed, no characters to keep it out of Lesquerella and to the 
species of that genus it shows many points of similarity. In the 
author’s opinion this species is to be considered rather near the 
great plexus of the genus from which arose the three sections. 
This view explains the many points of similarity to certain 
species placed in other sections. 
3. L. Schaueriana (Kuntze) Payson, new comb. 
Vesicaria argentea Schauer, Linnaea 20: 720. 1847; Gray, 
Bost. Jour. Nat. Hist. (Pl. Lindh.) 6: 150. 1850. 
Lesquerella ? argentea Wats. Proc. Am. Acad. 23: 252. 1888, 
not MacMillan. 
