1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 149 
long, stigmas capitate, conspicuous; septum thin, nerved one- 
half its length, areolae not tortuous; ovules 4-6 in each cell, 
funieuli long, slender, attached to sep- 
tum for about one-fourth their lengths; 
seeds flat, narrowly winged. 
Distribution: south central Texas. 
Specimens examined: 
Texas: Houston, Harris County, 
April 10, 1903, Biltmore Herbarium 
14807 (U. S. Nat. Herb.); prairies 
west of Brazos, April 1, 1839, Lind- 
heimer (Mo. Bot. Gard. Herb.); sand 
hill near Austin, May 15, 1872, Hall 
23 (U. S. Nat. Herb. and Mo. Bot. 
Gard. Herb.) ; sands, Llano, May, 1885, 
Reverchon (U. S. Nat. Herb. and Mo. 
Bot. Gard. Herb.); sandy soil, Baby- 
head, Llano County, May, 1887, Rever- 
chon (Mo. Bot. Gard. Herb.); Co- 
lumbus, April 8, 1907, Howell 356 (U. n a XM. e Tice E LA 
S. Nat. Herb.); prairies west of Vic- 
toria, Feb., 1845, Lindheimer (Mo. Bot. Gard. Herb.); Victoria, 
April 28, 1905, Tracy 9193 (Mo. Bot. Gard. Herb. and U. 8. 
Nat. Herb.); Vietoria, April 28, 1905, Maxon 3815 (U. S. Nat. 
Herb.); dry open ground, Goliad, Goliad County, March 10, 
1916, Palmer 9136 (Mo. Bot. Gard. Herb.); Herbarium Texano- 
Mexicanum, Berlandier 2538 (Mo. Bot. Gard. Herb.). 
L. grandiflora possesses the largest flowers of any known mem- 
ber of the genus and is quite an attractive plant when in blos- 
som. The specific name brevistyla was given by Torrey and 
Gray to a Texas plant which they believed to be distinct from 
L. grandiflora, judging from the illustration of that species in 
Sweet’s ‘British Flower Garden.’ Later, with authentic material 
at hand, they recognized the two as identical. The variety 
g. pinnatifida differs from the species in having more deeply 
pinnate basal leaves and is probably only an ecological form. 
L. grandiflora is very close to L. auriculata. No intermediate 
specimens have been seen, however, and though the differences 
are slight the two plants may best retain their specifie designa- 
