123 



Erect stoutish bien or per, simple or 

 with few branches: Ivs narrow, entire, 

 dentate or lobed: fls large, or to light 

 y. sep narrow, equal at base or the lat- 

 eral saccate: pet with slender claws and 

 obovate blades: pod linear, flattev-d, 

 with 1-nerved valves or quadrangular: 

 & Is in 1 row, num, not margined. 



As last defined by Jepson, the genus 

 Cheiranthus of Linnaeus. 

 LRYSIMUM OFFICINALE L. 



Abrams, Fl LA 169. 



See sisymbrium officinale Scop. 

 ERYSISUM ASPERUM DC. 



British Am to Mexico. Cruz. SBer 

 (Or 1391). Baja! SD (Or 17). Hall, 

 U 82. 



DC, Syst 2:505 (1821); Hook, Fl 1:64 

 t 22. 



Type locality: "on the plains of the 

 Missouri, commencing near the con- 

 fluence of the White river." 



Coville, CNH 4:64. 260. 



Bien, canescent with short appressed 

 hairs: sis solitary and simple, rarely 

 branched above, I-?, ft hi or less: Ivs 

 oblanceolate or narrowly spatulate: the 

 cauline linear to linear-lanceolate, en- 

 tire or sparingly repand with short 

 acute teeth, 1-3 i long: sep narrow, 4-6 

 li long, strongly gibbous: pet 8-12 li 

 long, light y to deep or, or p: pods 1-4 i 

 long, 1 li wide, beaked with a stout sty, 

 ascending on stout spreading pedicels 

 3 li long. 



Erysimum Californicum Greene. 



Cheiranthus u,speras Nuttall, Gen 2.69 

 (1818). 



Genus BARBAREA R. Brown. 



Erect glabrous biennial or per 

 branching herbs with angled sts, pin- 

 natifid Ivs and racemose y fls. Silique 

 elongated, linear 4-angled; valves keel- 

 el or ribbed; sty short; stig 2-lobed or 

 capitate. Sds in 1 row in each cell, flat, 

 obiong, marginless. Cotyledons accum- 

 bent. 

 j_s- itBAREA BARBAREA MacM. 



Tufted sts erect, 3-6 dm high; lower 

 Ivs petioled, 5-12 cm long, lyrately-pin- 

 natifid, seg oval or obovate, repand- 

 toothed or sometimes entire; upper Ivs 

 sf ssiie, rarely clasping: fls y, 6-8 mm 

 broad; pods spreading or ascending, 

 about 2 cm long, obscurely 4-angled; 

 pedicels about 4 mm long. 



Barbarea vuigaris R Br. 



Abrams, Fl LA 171. "Moist places in 

 the ims. confined mostly to the pine 

 belt. Je-Ag." 

 BAT-BARIBA VULGARIS R. Br. 



See Earbarea barbarea MacM. 



Variety ARCUATA Fries. 



Pols and pedicels spreading. 

 Variety Gi^ABRlOR Robinson. 



Genus SISYMBRIUM Linnaeus. 



Erect ann with pinnatifid or finely 

 dissected Ivs, the base not clasping or 

 auriculate:. fls sm,' y: sep oblong or 

 linear, equalling or exceeding the claws 

 of the pet: silique linear, terete or 

 nearly so. the values more or less dis- 



124 



tinctly 3-nerved; stigma sessile or the 

 style very short: cotyledons incumbent. 

 SISYMBRIUM INCISUM Engelm. 



Ann; pubescence short, more or less 

 glandular: sts branched, 1-4 ft hi: Ivs 

 pinnate, segs linear to ovate-oblong, 

 more or less deeply pinnatifid, some- 

 times entire: pet y, about 1% li long: 

 pods narrowly linear, usually pointed 

 at both ends, y 2 i long and 8-12-seeded, 

 OF sometimes much shorter and few- 

 seeded, mostly exceeding the spreading 

 pedicels. 



Engelmann in Gray, PI Fendl 8 

 (1849). 



Type localities: "banks of streams in 

 New Mexico; Santa Fe .creek, and Mora 

 River." LA (Davidson). Wash. NM. 

 Variety FILIPES Gray, PI Fendl 8. 



Sisymbrium longepedunculatum Four, 

 Sisymb 59, excluding synonymy. 



Davidson Erythea 2:178. LA Co. 



A form with divaricate pedicels, 6-8 li 

 long, exceeding the pods. From Ore, 

 perfectly glabrous (Spaulding); from 

 Ar, canescent with a fine dense pubes- 

 cence (Palmer). 

 Variety HARTWEGIANUM S. Watson. 



The short pods on somewhat ap- 

 pressed or nearly erect pedicels about 

 2 li long. 



Sisymorium Hartwegianum Fourn, 

 Sisymb 66. 

 SISYMBRIUM OFFICINALE Scop. 



Davidson, PI LA Co 2; Erythea 1:57. 

 LA Cf). 



Hedge Mustard. A little rough-hispid 

 with scattered hairs; stems rigid, erect, 

 3-4 ft high, with divaricate branches 

 above; Ivs lyrately and often somewhat 

 runcinately pinnatifid or pinnately 

 parted with dentate or coarsely toothed 

 seg petioled, the lowest rosulate and 

 4-10 i long: fls lV 2 -2 lines in diam; 

 pods terete, % i long, tapering from 

 base to summit, nearly sessile, closely 

 appressed to the axis in a long slender 

 raceme. A very common weed. 



Santa Cruz Island, "in cult lands 

 only." Greene. 



Erysimum officinale L. 

 SISYMBRIUM ACJTANGULUM DC. 



Davidson, Erythea 1:57 LA, probably 

 refers to Thelypodium lasiophylum in_ 

 alienum. 

 SISYMBRIUM REFLEXUivI Nutt. . 



Brandegee, Zoe 1:113, Cat. 



See Thelypodium lasiophyllum 



Greene. 

 SISYMBRIUM PINNATUM Greene. 



Sisymbrium canescens Nuttall, Gen 

 2:68 (1818). 



Upper San Joaquin valley. Cal. Baja. 



Greene, Cal ac b 2:390 (1887). 



Cruz, LA (Davidson). 



Erysimum pinnatum Walter, Fl Carol 

 174 (1788). 



See Sophia pinnata Howell, for de- 

 scription. 

 Genus RAPHAXUS Linnaeus. 



Erect or widely branching from the 

 base, ann or bien herbs, with lyrate Ivs 

 and showy fls: Silique elongated linear, 



