234 Order 13— CRUCIFER^B. 



ceme, which becomes 1 — 2f long, and environed by tho oppressed sessile pods. 

 Jn., Sept. Medicinal. § Eur. 



2 S. Sophia L. Flixweed. Lvs. bipinnatifid, lobes linear-oblong, acute, incised ; 

 sepals longer than the petals ; silique linear, slender, erect, longer than the spread- 

 ing pedicel. — Plattsburg, N. Y. (Mrs. Conaut), and Can. along the St. Lawrence. 

 Steins erect, 1 — 2f high. Leaves ovate in outline, finely dissected, almost tripin- 

 natifid. Fls. very small, pale yellow. Siliques 1' long, very narrow, in long 

 racemes. July. 



3 S. canescens Nutt. Tanset Mustard. Lvs. bipinnately divided, canescent, 

 lobes oblong or lanceolate, subdentate, obtuse; pttats about equalling the calyx ; 

 siliques oblong-linear, ascending, slwriir (or never longer) than the spreading pedi- 

 cels. — T Arctic Sea to Florida. Plant 1 — 2f high, often nearly smooth. Lvs. 

 about 3' long, sessile, lance-oblong in outline, segm. 5 — 7 pahs, finely divided. 

 Fls. very small. Siliques 3 — 5" in length, the seeds somewhat 2-rowed. Variable. 

 Mar., Jn. 



13. WAREA, Nutt. (Named in honor of Mr. Ware, the discoverer.) 

 Sepals colored, ligulate ; petals with very slender claws, longer than 

 the lamina; silique flattened, long and slender, raised on a slender 

 Btipe ; stamens nearly equal, 0||. — CD Glabrous, entire-leaved plants, with 

 the aspect of Cleomc. Fls. white or purple, in short racemes. Siliques 

 curved and decimate. 



1 "W. cuneifdlia Nutt. Lvs. oblong, obtuse, cuneate at base, and sub-sessile.— 

 Dry hills, Gra. (Mettauer) and Fla. St. 1 — 2fhigh, branched above. Lvs. \ — 1' 

 long, rather thick, the upper linear. Fls. in showy clusters at the summits of the 

 branches, white or purplish. Pedicels divergent. Sta. exserted, with the anth- 

 ers finally cireinate. Petals with remarkably slender claws 2" in length, lamina 

 1". Siliques 1£' or more in length, 4 times longer than the filiform stipe. 

 Jn., Aug. 



2 W. amplexifolia Nutt. Lvs. oblong-ovate, partly clasping. — 3D Fla. In all 

 other respects like No. 1, and in all probability not distinct fioin it. 



14. HESPERIS, L. Rocket. (Gr. tarrepa, evening; when the 

 flower is most fragrant.) Calyx closed, furrowed at base, shorter than 

 the claws of the petals; petals bent obliquely, linear or obovate ; sil- 

 ique 4-sided, 2-edged or subterete ; seeds not margined ; stigmas 

 forked, with the apices converging (0||). — Fls. cyanic. 



1 H. matronalis L. St. simple, erect; lvs. lanceolate-ovate, denticulate; petals 

 ©marginate, mucronate ; pedicels as long as tho calyx. — A fine garden peren- 

 nial, said to be found native about Lake Huron. St. 3 — 9f high. Fls. purple, 

 often double, and white in (3 hortensis. f Eur. 



2 H. aprica L. St. erect, simple, pubescent : lvs. oblong, obtuse, entire, ciliatt 

 hispid; pedicels as long as the calyx. — 21 From Siberia. Stem a foot high. 

 Fls. purple. May, Jn., f. 



15. SINAPIS, Tourn. Mustard. (The Greek name, olvam.) Sepals 

 equal at base, spreading; petals ovate, with straight claws; siliques 

 subterete ; valves veined ; style short and subulate, or ensiform ; seeds 

 in a single series, globular (0»). — Fls. always yellow. 



1 S. nigra L. Black Mustard. Smooth; silique smooth, somewhat 4-angled, 

 appressed to the rachis, and beaked with a slender, 4-sided style. — CD In culti- 

 vated grounds and waste places. St. 3 — 6f high, round, smooth, striate, branch- 

 ing. Lvs. all petiolate, lower ones variously lyrate and dentate, upper ones 

 lance-linear, pendulous, entire. Sep. and pet. sulphur-yellow. Pods very nume- 

 rous, nearly 1' long. Sds. numerous, small, globous, nearly black, well known 

 as a condiment. Jn., July., \ § Eur. 



