56 CRUCIFER.K. SOPHIA. 



ERYiSIMUM. 



(jincd. (Cotyledons plane, incumbent, 



18 SOPHIA L. Syst. ed. 1 Adams Fam. ii, 417. 

 SISYMBRIUM of author* as to our plants. 



Erect branching annuals with pinnately multifid leaves and 

 small yellow flowers. Pubescence branched. Sepals oblong to 

 linear, usually spreading. Stamens 6, free and unappendaged. 

 Pods ascending or somewhat spreading, on slender pedicels ob- 

 long-linear, subterete, less than an inch long. Style short or 

 none. Stigma entire. 



S. pinnata Erysimum pinnatum Walt. (1788). Sisymbrium canescens 

 Nutt. (1818}. Canescently pubescent: stems 6-30 inches high : leaves 1-2- 

 pinnatifid, the segments toothed or pinnatifid: petals equaling the sepals, 

 a line long or less : pods oblong or linear-oblong, nearly or quite a line 

 broad, 3-6 lines long, acute at each end, shorter than the slender spread- 

 ing pedicels : seeds ovate-oblong, ^ line long, in 2 rows in each cell. 

 Eastern Oregon and Washington to southern California, Florida and Brit. 

 Columbia. 



S. incisa Greene Pitt, iii, 95. Sisymbrium incisum Engelm. Pubes- 

 cence short, more or less glandular : stems 1-4 feet high : leaves pinnate, 

 the segments from linear to oblong, pinnatifid or sometimes entire : pet- 

 als about \% lines long : pods nearly linear, often % inch long, usually 

 pointed at each end and 8-12 seeded, sometimes much shorter and few- 

 seeded. Valley of the Snake River to Nevada and Colorado. 



S. Hartwegiana Greene 1. c. Sisymbrium Hartwegianum Fourn. 

 iSlender, subglabrous or finely glandular-puberulent : leaves pinnate ; leaf- 

 lets lanceolate or narrowly oblong, obtuse and obtusely or acutely toothed : 

 pods 1)^-3 lines long, erect 011 ascending or erect pedicels as long: seeds 

 sometimes imperfectly biseriate. Eastern Oregon and Washington to Cal- 

 ifornia, Colorado and British Columbia. 



S. longipedicellata. Sisymbrium longipedicellatum Fourn. Slender, 

 6-8 inches high, nearly or quite glabrous: lower leaves 1-2-pinnatifid, 

 the upper pinnate with few elongated linear nearly or quite 

 entire segments : fruiting racemes lax : pods 5-7 lines long, erect on 

 slender spreading or ascending pedicels 6-10 lines long. Brit. Columbia 

 to Oregon and Nevada. Not common east of the Cascades. 



19 ERYSIMUM Tourn. Inst. 228 t. Ill, L. Gen. 548. 



Pods subsessile, erect, appressed to the rachis, subulate, taper- 

 ing almost from base to apex. Flowers small and inconspicu- 

 ous, yellow. Stigma slightly 2-lobed. Pubescence of simple 

 hairs. Leaves pinnatifid. 



E. OFFICINALE L. Sp. ii, 660. Sisymbrium officinale Scop. Annual or bi- 

 ennial, erect, rigid, divaricately branching: leaves runcinate-pinnatifid, 

 the lowest 3-6 inches long: pods subterete, half an inch long, a line wide, 

 subsessile, closely appressed, in a long raceme. Common in waste places. 

 Naturalized from Europe. 



20 SMELOWSKIA C. A. Meyer in Ledeb. Fl. Alt. iii, 165. 



Low cespitose perennials with pinnatifid or bipinnatifid leaves 

 and small fllowers in terminal racemes. Pubescence simple or 

 stellate. Sepals oblong, subequal, somewhat spreading. Petals 

 entire, obovate or spatulate, longer than the sepals* Stamens 6, 



