1921) 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 159 
March 22, 1907, Howell 332 (U. S. Nat. Herb.); prairie near 
Victoria, Feb., 1845, Lindheimer 308 (Mo. Bot. Gard. Herb.); 
sandy banks of Green Lake near the mouth of Guadalupe, Feb., 
1845, Lindheimer 329 (U. S. Nat. Herb. and Mo. Bot. Gard. 
Herb.); shell marl banks near bay, Corpus Christi, March 8, 
1917, Palmer 11219 (Mo. Bot. Gard. Herb.); rocks near Goliad, 
April 9, 1900, Eggert (Mo. Bot. Gard. Herb.) ; sandy open ground, 
Refugio, March 9, 1916, Palmer 9121 (Mo. Bot. Gard. Herb.); 
Brackett, March 21, 1900, T'release 21 (Mo. Bot. Gard. Herb.); 
Ft. Clark, Kinney County, March 22, 1893, Mearns 1336 (U. 8. 
Nat. Herb.); Ft. Clark, Kinney County, Feb. 27, 1893, Mearns 
1246 (U. S. Nat. Herb.); Eagle Pass, April, 1883, Havard (U. S. 
Nat. Herb.); sands, Laredo, March 29, 1903, Reverchon 3718 
(Mo. Bot. Gard. Herb.); sandy banks of Rio Grande, Webb 
County, April 6, 1901, Eggert (Mo. Bot. Gard. Herb.); stony 
prairies on the Pinto Creek, western Texas, May, 1851, Wright 
849 (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.); valley of the 
Rio Grande, Parry, Bigelow, Wright & Schott 43 (U. S. Nat. 
Herb.) ; western Texas, Oct., 1849, Wright 15 (U. S. Nat. Herb.). 
Mexico: 
Nuevo Leon: Monterey and Pico Chico, March 18, 1900, 
Canby 21 (U. S. Nat. Herb.); Monterey, Feb. 20, 1900, Trelease 
22 (Mo. Bot. Gard. Herb.). 
Coahuila: valley of the Rio Grande near Piedras Negras, 
April 27, 1900, Pringle 9182 (U. S. Nat. Herb.); Sabinas, May 
21, 1902, Nelson 6771 (U. S. Nat. Herb.); Saltillo, March 3, 
1847, Gregg 292 (Mo. Bot. Gard. Herb.) ; Sierra Madre, 40 miles 
north of Saltillo, July 25-31, 1880, Palmer 30 (U. S. Nat. Herb. 
and Mo. Bot. Gard. Herb.); Saltillo, 1898, Paimer 182 (U. S. 
Nat. Herb. and Mo. Bot. Gard. Herb.) ; Chojo Grande, 27 miles 
southeast of Saltillo, Aug. 29, 1904, Palmer 372 (Mo. Bot. Gard. 
Herb. and U. S. Nat. Herb.) ; battlefield near Buenavista, March 
19, 1847, Gregg 315 (Mo. Bot. Gard. Herb.); Buenavista, Feb. 
14, 1847, Gregg 90 (Mo. Bot. Gard. Herb.); Parras, March, 
1905, Purpus 1024 (Baker Herb. at Pomona College, and Mo. 
Bot. Gard. Herb.). 
San Luis Potosi: Rio Verde, June 2-8, 1904, Palmer 464 
(U. S. Nat. Herb.); in the region of San Luis Potosi, 1878, Parry 
& Palmer 25 (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.); 
