4. Œ. humifùsa, Nutt. Stems decumbent or ascending (½--2° long); _hoary-pubescent with short dense appressed hairs; leaves_ narrowly lanceolate or oblanceolate (¼--1´ long), _sparingly repand-dentate or entire_, the radical leaves pinnatifid, the floral not reduced; capsule ½--1´ long, silky, curved; seeds smooth.--On the sea-coast, N. J. to Fla. 5. Œ. sinuàta, L. Stems ascending or decumbent, simple or branched (1° high or more), _more or less strigose-pubescent_ and puberulent; _leaves_ oblong or lanceolate (1--2´ long), _sinuately toothed or often pinnatifid_, the floral similar; capsule 1--1½´ 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. Œ. albicaùlis, Nutt. Stems erect (½--4° high), simple or branched, white and often shreddy, glabrous or puberulent; leaves linear to oblong-lanceolate (1--3´ long), entire or repand-denticulate, or sinuate-pinnatifid toward the base; calyx-tips free, throat naked; pods ½--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. Œ. linifòlia, Nutt. Annual or biennial, erect, very slender, simple or diffuse (6--15´ high), glabrous, the branchlets and capsules puberulent; radical leaves oblanceolate, _cauline linear-filiform_ ½--1´ long; spikes loosely flowered; corolla 2--3´´ long; _stigmas short; capsules_ obovate to oblong-clavate, 2--3´´ long, _not winged_, nearly sessile.--Ill. to E. Kan., La., and Tex. 8. Œ. pùmila, L. Biennial, puberulent, 1--2° high; _leaves_ mostly glabrous, _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. Œ. chrysantha, _Michx._)--Dry fields, N. Scotia to N. J., west to Minn. and Kan. June. 9. Œ. fruticòsa, 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_, prominently ribbed and _strongly winged_.--Common and very variable. Var. lineàris, Watson. Leaves linear to linear-lanceolate; capsule usually shorter than the pedicel, rather less broadly winged. (Œ. linearis of _Man._, in part. Œ. riparia, _Nutt._)--Conn. to Fla., west to Mo. and La.