1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 189 
two basal lobes; cauline leaves 1-3 cm. long, numerous, linear or 
narrowly oblanceolate, narrowed at 
the base, entire or slightly repand; 
petals yellow, narrowly obovate, claw 
slightly broadened at the base; fila- 
ments linear; fruiting inflorescence 
elongated; pedicels rather stout, hor- 
izontal or somewhat recurved, dis- 
tinctly sigmoid, about 1 cm. long; 
pods usually erect, often horizontal, 
globose, glabrous, about 4 mm. in di- 
ameter, stipe evident but less than 1 
mm. long; style about 3 mm. long; 
septum thin, nerved, areolae slightly 
tortuous; ovules 4-10 in each cell, 
funiculi long, attached to septum for 
about one-third their lengths; seeds Fig. edendi - inb 
flat, not margined. sketch x s rehome x 25.) 
Distribution: western Oklahoma and Texas, southern New 
Mexico, southeastern Arizona, northern Chihuahua, and So- 
nora. 
Specimens examined: 
Oklahoma: Glass Mountains, July 13, 1899, White 140 (Mo. 
Bot. Gard. Herb.); Cimarron Valley, Cherokee Outlet, June, 
1891, Carleton 214 (U. 8. Nat. Herb.); prairies near Woodward, 
June 5, 1901, Eggert (Mo. Bot. Gard. Herb.). 
Texas: west of Cross Timbers, April, 1882, Reverchon (Mo. 
Bot. Gard. Herb.); light soil, Brown County, April, 1882, Rever- 
chon (U. S. Nat. Herb.); sandy prairies near Comanche, Co- 
manche County, May 10, 1900, Eggert (Mo. Bot. Gard. Herb.); 
Knickerbocker Ranch, Dove Creek, Tom Greene County, 
May, 1880, Tweedy (U. S. Nat. Herb.); San Angelo, May 19, 
1903, Reverchon (Mo. Bot. Gard. Herb.); plains west of Pecos, 
April 20, 1902, Tracy & Earle 119 (Mo. Bot. Gard. Herb. and 
U. S. Nat. Herb.); sandy ground near Van Horn, May 13, 
1901, Eggert (Mo. Bot. Gard. Herb.); Rio Grande, 60 miles 
below El Paso, March, 1852, Wright 1318 (Mo. Bot. Gard. 
Herb.); sandy ground near Sierra Blanca, El Paso County, 
May 13, 1901, Eggert (Mo. Bot. Gard. Herb.); Big Springs, 
