(EVENING- PRIMROSE FAMILY.) 191 



lar ; capsule 1 - 1-J' long ; seeds strongly pitted. N. J. to Fla., west to E. Kan. 

 and Tex. Very variable. 



* * Caulescent perennial ; flowers axillary, nodding in the bud, white turning 



rose-color ; capsules sessile, linear ; seeds in a single row. 



6. CE. albicatllis, Nutt. Stems erect (i-4 high), simple or branched, 

 white and often shreddy, glabrous or puberulent ; leaves linear to oblong-lan- 

 ceolate (1 -3' long), entire or repand-denticulate, or sinuate-pinnatifid toward 

 the base; calyx-tips free, throat naked; pods -2' long, often curved or 

 twisted ; seeds lance-linear, smooth. W. Minn, to N. Mex., and westward. 



* * * Caulescent ; flowers diurnal, yellow and erect in the bud (except in n. 11); 



capsules obovate or clavate, quadrangular, the valves ribbed and the angles 

 more or less strongly winged (except in n. 7). 



7. CE. linifolia, Nutt. Annual or biennial, erect, very slender, simple 

 or diffuse (6-15' high), glabrous, the branchlets and capsules puberulent; 

 radical leaves oblanceolate, cauline linear-flbform |-l'long; spikes loosely 

 flowered ; corolla 2 - 3" long ; stigmas short ; capsules obovate to oblong-clavate, 

 2 -3" long, not winged, nearly sessile. 111. to E. Kan., La., and Tex. 



8. CE. pumila, L. Biennial, puberulent, 1-2 high; leaves mostly gla- 

 brous, entire, obtuse, the radical spatulate, the cauline narrowly oblanceolate ; 

 flowers loosely spiked; corolla 4-12" long; capsule glabrous, oblong-clavate, 

 3 - 6" long, sessile or on a short pedicel, slightly winged. (Incl. CE. chrysantha, 

 Alichx. ) Dry fields, N. Scotia to N. J., west to Minn, and Kan. June. 



9. CE. fruticbsa, L. (SUNDROPS.) Biennial or perennial, erect, often 

 tall and stout (1-3 high), villous-pubescent or puberulent or nearly glabrous ; 

 leaves oblong- to linear-lanceolate, mostly denticulate ; raceme corymbed or loose ; 

 petals 9 - 12" long ; capsule subsessile or with a pedicel shorter than itself, promi- 

 nently ribbed and strongly winged. Common and very variable. 



Var. linearis, Watson. Leaves linear to linear-lanceolate ; capsule usually 

 shorter than the pedicel, rather less broadly winged. ((E. linearis of Man., in 

 part. (E. riparia, Nutt.) Conn, to Fla., west to Mo. and La. 



Var. humifusa, Allen. Low, decumbent, somewhat woody, diffusely 

 branched, puberulent ; branches slender, flexuous ; leaves narrow ; flowers 

 few, small; capsules pubescent, about equalling the pedicel. (CE. linearis of 

 Man., in part.) Suffolk Co., L. Island. 



10. CE. glauca, Michx. Perennial, erect (2-3 high), glabrous and glau- 

 cous; leaves ovate to ovate-oblong (2- 4' long), repand-denticulate; flowers in 

 short leafy corymbs; petals 9 -15" long; capsule glabrous, ovoid-oblong, very 

 broadly winged, usually abruptly contracted into a pedicel equalling or shorter 

 than itself. Mountains of Va. to Ala., west to Ky. and E. Kan. 



11. CE. speci6sa, Nutt. Perennial, erect or subdecumbent, finely pu- 

 bescent ; leaves oblong-lanceolate to linear, repand-denticulate, or more or less 

 deeply sinuate-pinnatifid ; flowers large, white or rose ; capsule clavate-obovate, 

 strongly 8-ribbed, rigid, acute, stoutly pedicelled. Mo. to Kan. and Tex. 



* # * * Capsule oblong to ovate or orbicular, broadly winged, rigid and sessile. 



*- Acaulescent or nearly so ; flowers white or rose-color. 



12. CE. triloba, Nutt. Biennial or perennial, nearly glabrous; leaves 

 2-10' long, somewhat ciliate, loug-petioled, runciuate-pinnatifid or oblanceo- 



