1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 147 
5. L. auriculata (Engelm. & Gray) Wats. Proc. Am. Acad. 
23:250. 1888; Coulter, Contr. U. S. Nat. Herb. 2: 17. 1891; 
Wats. in Gray, Syn. Fl. N. Am. 1°: 116. 1895; Small, Fl. South- 
eastern U. S. 469. 1903, and ed. 2, 1913. 
Vesicaria auriculata Engelm. & Gray, Bost. Jour. Nat. Hist. 
(Pl. Lindh.) 5: 240. 1847; Gray, Bost. Jour. Nat. Hist. (Pl. 
Lindh.) 6:148. 1850; Walp. Ann. 2:38. 1851. 
Alyssum auriculatum Kuntze, Rev. Gen. Pl. 2: 931. 1891. 
Annual or biennial, rather sparsely stellate with few-rayed 
hairs; stems hirsute, particularly at the base, rather stout, 1- 
2.5 dm. long, few to many from the base, mostly unbranched, 
decumbent and spreading; terminal bud developing; radical 
leaves 2-5 cm. long, oblanceolate in outline, lyrately toothed or 
subentire, usually obtuse, narrowed at the base but scarcely 
petioled; cauline leaves shallowly toothed or nearly entire, 
oblong, 1-3 cm. long, obtuse, sessile and auriculate at the base; 
flowers yellow; petals 5-7 mm. long; filaments abruptly and 
broadly dilated at the base; fruiting inflorescence elongated, 
rather crowded; pedicels ascending-divergent, 1-1.5 cm. long; 
pods erect, glabrous, sessile, globose, 4-6 mm. in diameter; 
styles about 2 mm. long; septum thin, areolae somewhat tor- 
tuous, nerved from the apex toward the base; ovules 6-8 in each 
cell, funiculi long and slender, attached to septum for about 
one-fourth their lengths; seeds narrowly winged. 
Distribution: central Oklahoma to southern Texas. 
Specimens examined: 
Oklahoma: Kingfisher County, April 21, 1896, L. A. Blank- 
inship (Rky. Mt. Herb.); Huntsville, Kingfisher County, April 
10, 1896, L. A. Blankinship (U. S. Nat. Herb. and Mo. Bot. 
Gard. Herb.); waste place near Kingfisher, Kingfisher County, 
April 26, 1913, Stevens 188 (U. S. Nat. Herb. and Mo. Bot. Gard. 
Herb.). 
Texas: Wright (U. S. Nat. Herb.); sands, Big Sandy, April 7, 
1902, Reverchon 2967 (Mo. Bot. Gard. Herb.); sands, Terrell, 
April 5, 1903, Reverchon 3717 (U. S. Nat. Herb. and Mo. Bot. 
Gard. Herb.); sands, southwest of Dawson, April 16, 1903, 
Reverchon (Mo. Bot. Gard. Herb.) ; on right bank of the Brazos, 
Feb. 24, 1844, Lindheimer (Mo. Bot. Gard. Herb.); near San 
Felipe on the Brazos, March, 1844, Lindheimer 217 (Mo. Bot. 
