OF ARTS AND SCIENCES. 251 



from the apex to the middle, several- to many-seeded, sessile or stipi- 



tate ; stigma flat-capitate, entire or lobed. Seeds rounded, flat, mar- 



t 



* * Seeds immarginate ; leaves not auriculate. 



4. L. lasiocarpa. Finely pubescent : leaves coarsely toothed or pinnatifid, 

 oblanceolate to oblong: petals obovate : pods hirsute, sessile, the stout style 

 half as long. — V. lasiocarpa, Hook. Ringgold Barracks, Texas; Tamaulipas, 

 Mexico. 



5. L. densiflora. Finely pubescent and somewhat canescent : leaves entire 

 or sparingly repand, oblanceolate : petals broadly spatulate : fruiting raceme 

 often short and crowded ; pods glabrous, substipitate, the very slender style as 

 long. — V. densiflora, Gray. Central Texas. 



§ 2. Lesquerella, proper. Canescent throughout with fine appressed and 

 often compact stellate pubescence or lepidote : leaves not auriculate-clasping : 

 filaments filiform or linear-subulate: seeds immarginate. 



* Ovary and pod finely pubescent, sessile or very nearly so. 



■*- Pods ovate or oblong or oblong-ovate : biennials or perennials with simple 



stems. 



•*+ Pods ovate to oblong-ovate, acute or acutish, somewhat compressed (the 

 valves less convex toward the apex), erect on spreading or ascending pedicels : 

 pubescence compact and rarely distinctly stellate. Western species. 



6. L. occidextalis. Caudex usually simple : leaves oblanceolate, coarsely 

 sinuate-dentate, the cauline spatulate, entire: pods oval, acutish, 3 or 4 lines 

 long; style 2 lines long; cells 4-ovuled. — V. occidentalis, Watson, Proc. Am. 

 Acad. 20. 353. Oregon and Northern California. 



7. L. Kingii. Leaves entire, the lower ovate, petiolate, the cauline spatu- 

 late : pods oblong-obovate, acute, 2 or 3 lines long ; style a line long ; cells 

 2-4-ovuled. — V. Kingii, Watson, 1. c. Northern Nevada; Lassen's Peak. 



8. L. alpina. Dwarf, usually cespitose and multicipital ; stems slender : 

 leaves entire, narrow, linear to linear-oblanceolate : petals spatulate with a 

 broad base : pods oblong-ovate, acute, compressed, 2 lines long ; style about as 

 long; cells 2-4-ovuled ; septum sometimes perforate. — V. alpina, Nutt. Cypress 

 Hills, Canada, to Colorado and Montana. 



Var. intermedia. Stems stouter: flowers larger, the oblong sepals 2^ to 4 

 lines long, and the petals more narrowly spatulate : pods ovate-elliptical ; cells 

 4-ovuled. — V. alpina, Gray, PI. Fendl. 9. New Mexico to southern Colorado 

 and Utah. 



9. L. Arizonica. See page 254. 



++ +-*■ Pods oblong or oblong-ovate, not compressed or slightly so, erect on 

 usually divaricate curved pedicels. Rocky Mountains. 



10. L. Montana. Pubescence often evidently stellate; caudex rarely branched: 

 leaves oblanceolate, the radical often subovate on slender petioles and obscurely 

 toothed: petals spatulate: pods 3 lines long, with long slender style; cells 

 4-8-ovuled. — V. montana, Gray. Northern Colorado and southern Wyoming, 

 near and on the mountains. 



11. L. Moxtevidensis. Compactly lepidote: leaves narrowly to linear- 

 oblanceolate, entire or repandly dentate : flowers large : pods elliptical, 3 lines 



