BRASSICACEAE 469 
Filaments more or less dilated below: foliage hispidly stellate. 
Seeds margined : filaments strongly dilated at the base. 
Capsules flattened, pubescent. 1. L. Lescurii. 
Capsules subglobose, glabrous. 
Filaments gradually dilated : style less than 2 mm. long at maturity. 22D. Map jo 
Filaments abruptly dilated : style over 2 mm. long at maturity. 3. L. auriculata. 
Seeds without margins : filaments slightly dilated. 
Capsules pubescent: filaments dilated ee, their length. 4. L. lasiocarpa. 
Capsules glabrous: filaments dilated for 15 their length. 5. L. densiflora. 
ene very slender or linear-subulate: foliage compactly canescent or scaly- 
stellate. 
Ovaries and capsules pubescent. 
Cavities of the ovary with 2 ovules: pods 2 mm. in diameter. 
Cavities of the ovarý with 4-6 ovules : pods 3-5 mm. in diameter. 
Ovaries and capsules glabrous. 
Capsules oblong or pear-shaped. 
Capsules oblong : pedicels ascending : style about as long as the capsule. 8. L. repanda., 
Capsules pyriform: pedicels spreading : style much shorter than the cap- 
sule., 9. L. Nuttallii. 
Capsules subglobose. 
Capsules pendent from recurved pedicels. 
Corollas white or pink : ovules 6 in a cavity : style one-half as long as the 
L. globosa. 
L. Berlandieri. 
o 
capsule. 10. L. pallida. 
Corollas yellow : ovules 2-4 in a cavity : style as long as the capsule. 11. L. recurvata. 
Capsules erect, or nearly so, from ascending often curved pedicels. 
Annuals. : 
Stem-leaves with pinnatifid-dentate blades. 12. L. Lindheimeri. 
Stem-leaves entire or merely repand blades. 
Ovules 4-8 in each cavity of the ovary. 
Pods 2-3 mm. in diameter. 
Pods stipitate. 13. L. gracilis. 
Pods sessile. 14. L. sessilis. 
Pods 4-5 mm. in diameter. 15. L. polyantha. 
Ovules 2 in each cavity of the ovary. 16. L. angustifolia. 
Biennials or perennials. RE 
Capsules 6 mm. long. l7. L. Engelmannit. 
Capsules 4-5 mm. long. 18. L. argyrea. 
1. Lesquerella Lescürii (A. Gray) S. Wats. Annual, roughish with stellate hairs. 
‘Stems branched at the base ; branches erect, ascending or decumbent, 1-3 dm. long, sim- 
ple or branched : basal-leaves longer than the cauline: stem-leaves oblong-oval or oblong- 
ovate, 1-4 cm. long, repand-dentate, sessile and clasping by the auricled bases: pedicels 
ascending, 5-10 mm. long: sepals 2-2.5 mm. long: petals yellow, broadly spatulate, 4-6 
mm. long: pods oval or ovoid, 4-5 mm. long, flattened, pubescent, the style about j as 
long as the body. 
On hillsides, near Nashville, Tennessee. Early spring. 
2. Lesquerella grandifldra (Hook.) S. Wats. Annual, thinly pubescent or some- 
what hispid. Stems branched at the base; branches erect or ascending, 1-4 dm. long, 
commonly simple: basal leaves oblanceolate, deeply sinuate or pinnatifid: stem-leaves 
shorter than the basal; blades oblanceolate, oblong or oblong-oblanceolate, 1-3.5 cm. 
long, entire or sinuate, sessile and somewhat clasping : pedicels ascending or spreading, 
1-1.5 em. long: sepals oblong to oblong-lanceolate, 3-4 mm. long: petals obovate, twice 
or thrice as long as the sepals: pods subglobose, 5 mm. in diameter, glabrous. 
On plains or prairies, Texas. Spring. 
. 3. Lesquerella auriculàta (Engelm. & Gray) S. Wats. Annual, hirsute. Stems 
simple and erect or usually branched at the base ; branches ascending or decumbent, 1-3 
dm. long, commonly simple: basal leaves oblanceolate, repand, 2-5 cm. long: stem- 
leaves with oblong or oblong-lanceolate blades, 1-3 dm. long, entire or repand, sessile, 
clasping by the auricled bases: pedicels ascending, 1-1.5 em. long: sepals oblong to ob- 
long-lanceolate, 4-5 mm. long : petals yellow, narrowly obovate, about twice as long as the 
sepals: pods subglobose, 5-6 mm. in diameter, glabrous, narrowed at the base, the style 4 
as long as the body. 
On dry prairies, Texas. Winter and spring. 
4. Lesquerellalasiocárpa (Hook. ) S. Wats. Annual, finely hispid. Stems branched 
at the base; branches ascending or spreading, 1-7 dm. long, simple or branched : basal 
leaves oblanceolate in outline: blades pinnatifid, 3-8 cm. long, the segments entire or 
toothed : stem-leaves oblong or oval, 1-3 em. long, pinnatifid or coarsely toothed, sessile, not 
auricled : pedicels spreading or slightly recurved, 1-1.5 em. long: petals obovate, about 6 
mm. long: filaments slightly dilated below the middle: pods spheroidal, 5-6.5 mm. long, 
the style 4 as long. 
In, valleys, Texas and adjacent Mexico. Spring. 
5. Lesquerella densiflóra (A. Gray) S. Wats. Annual, more or less densely canes- 
cent. Stems branched at the base; branches erect or ascending, 1-3 dm. long, often 
