470 BKASSICACEAE 



simple : leaf-blades spatulate to lanceolate or oblong, entire or repand, the lower with 

 petioles, the upper sessile : corymbs rather densely flowered : pedicels finally 6-10 mm. 

 long, ascending: sepals lanceolate or linear-lanceolate, 4-4.5 mm. long: petals broadly 

 spatulate, about twice as long as the sepals : filaments slightly dilated for ^ their length : 

 pods subglobose, 4 mm. in diameter, rather crowded, glabrous. 

 In valleys and dry soil, central Texas. Spring. 



6. Lesquerella globosa (Desv. ) S. Wats. Annual or biennial, densely pubescent with 

 fine stellate hairs. Stems erect, or usually branched at the base, with ascending branches 

 2-4 -dm. tall, more or less branched : basal leaves with oblong or obovate-oblong blades 

 1.5-4 cm. long : stem-leaves oblanceolate, narrowly oblong or linear, 1-2 cm. long, sessile 

 or nearly so, rarely undulate-repand : racemes elongating, sometimes paniculate : pedicels 

 finally spreading, 5-10 mm. long, very slender : sepals ovate-oblong or oblong, about 3 

 mm. long : petals yellow, spatulate, about twice as long as the sepals : cavities of the ovary 

 with 2 ovules : pods subglobose, 2 mm. in diameter, glabrous, the style much longer than 

 the body. , 



On open banks, Wisconsin to Kentucky and Tennessee. Early spring. 



7. Lesquerella Berlandieri (A. Gray) S. Wats. Annual or biennial, rather sparsely 

 pubescent. Stems usually branched ; branches slender, 1-3 dm. long : basal leaves with 

 lyrate-pinnatifid blades several cm. long : stem-leaves few ; blades oblanceolate, oblong-lan- 

 ceolate or ovate, shorter than those of the basal leaves, repand, petioled : petals spatulate, 

 about 6 mm. long : cavities of the ovary with 4-6 ovules : pods globose or ellipsoidal, 3-5 

 mm. in diameter, the style longer than the body. 



On plains and prairies, along or near the Rio Grande, Mexico, not yet definitely known from the 

 Texan side. 



8. Lesquerella repanda (Nutt. ) S. Wats. Annual, finely scurfy-pubescent. Stems 

 simple or sparingly branched, 2-3 dm. long, often spreading : leaves various ; basal with 

 lyrately pinnatifid blades 5 cm. long : stem-leaves spatulate to linear-spatulate, entire : 

 racemes several-many-flowered : pedicels ascending, 1.5-^2 cm. long : petals spatulate, about 

 6 mm. long : pods oblong, 4-5 mm. long, glabrous, acutish, slightly narrowed to the very 

 short stipe, the style about as long as the body. 



On the banks of the Red River, Arkansas. Spring. 



9. Lesquerella Nuttallii (A. Gray) S. Wats. Annual, quite similar to L. repanda. 

 Basal leaves and flowers unknown : racemes many-flowered, elongating : pedicels spread- 

 ing, 1-2 cm. long : pods 5 mm. long, erect, pyriform, slightly constricted above the abruptly 

 contracted base, short-stalked, glabrous, the style 2-4 mm. long. 



On prairies near the Red River, Arkansas. Spring. 



10. Lesquerella pallida (T. &G. ) S. Wats. Annual, rather thinly scurfy-pubescent. 

 Stems branching ; branches erect or spreading, 2-3 dm. long : leaves mainly with oblanceo- 

 late repand blades 1-3.5 cm. Jong : pedicels recurving, about 1 cm. long : sepals 1-1.5 mm. 

 long : petals white or pink, spatulate, 1 mm. long : cavities of the ovary with 6 ovules : 

 pods subglobose, nodding, 4 mm. in diameter, short-stalked, the style about 2 mm. long. 



On prairies, eastern Texas. Spring. 



11. Lesquerella recurvata (Engelm.) S. Wats. Annual, slender, thinly pubes- 

 cent. Stems branched at the base ; branches ascending or spreading, 0.5-3 dm. long, 

 often branched : leaf -blades varying from spatulate to obovate or linear, 0.5-3 cm. long, 

 acutish, entire, the lower ones with petioles sometimes as long as the blades : pedicels re- 

 curving, about 1 cm. long : sepals oblong, 2-3 mm. long : petals yellow, spatulate, 4-6 mm. 

 long: cavities of the ovary with 2-4 ovules: pods subglobose, 2.5-3 mm. thick, not 

 stipitate, glabrous. 



In light soil, Texas. Spring. 



12. Lesquerella Lindheimeri (A. Gray) S. Wats. Annual, finely but densely pubes- 

 cent with stellate hairs. Stems branched at the base ; branches ascending, 1-3 dm. long, 

 simple or branched : leaf-blades varying from oblanceolate to lanceolate, 2-6 cm. long, 

 more or less prominently repand : pedicels finally spreading, 10-12 mm. long : sepals 

 oblong, 3-3.5 mm. long, obtuse: petals yellow, obovate, spatulate, about twice as long as 

 the sepals : cavities of the ovary with 6-8 ovules : pods subglobose, 3-4 mm. long, barely 

 stipitate. 



In light soil, Texas. Spring. 



13. Lesquerella gracilis (Hook. ) S.Wats. Annual, sparsely pubescent with stellate 

 hairs. Stems branched at the base ; branches erect or ascending, sometimes spreading, 1-3 

 dm. long, simple or branching : leaf-blades linear or oblanceolate, 1-3 cm. long, entire or 

 repand: pedicels ascending or spreading, 1-2 cm. long: sepals oblong, 3-3.5 mm. long: 



