174 



CRUCll'l'RAE. 



Vol. II. 



I. Erysimum officinale L. Scop. Hedge Weed or Mustard. Fig. 2059. 



liiysiminn officinale L. Sp. PI. 660. 175.1. 

 Sisyiiihriuin officiiuilc Scop. Fi. Cam. Ed. 2, 2: 



1772. 

 S. IciocarpKHi Jord. Diag. i : 139. 1864. 



26. 



1753. 



Aust. Ed. 2, 52. 



Erect, more or less pubescent, or glabrous, 1- 

 3 bigh, witb rigid spreading branches. Leaves 

 runcinate-pinnalifid, the lower petioled, the upper 

 nearly sessile; lobes 3-6 pairs and an odd one, 

 oblong, ovate or lanceolate, dentate, crenate or 

 nearly entire, acutish or obtuse, the lower ones 

 often recurved; pedicels l" long, erect in fruit; 

 flowers yellow, iJ" broad, pods $"-f long, linear, 

 acuminate, glabrous or pubescent, closely ap- 

 pressed to the stem ; valves with a strong promi- 

 nent midrib. 



In waste places, common throughout our area, ex- 

 cept the extreme northwest to the Pacific Coast. 

 Also in Bermuda and in southern South America. 

 Naturalized from Europe. Native also of northern 

 Asia. May-Nov. California mustard. Bank-cress. 

 ScramhHng rocket. 



27. NORTA Adans. Fam. PI. 2: 417. 1763. 



Biennial herbs, with alternate pinnatifid or dentate leaves and medium-sized yellow 

 flowers. Pubescence, when present, of simple hairs. Sepals spreading. Pods narrowly 

 linear, much elongated, terete or nearly so, divergent or ascending. Stigma 2-Iobed. Seeds 

 in I or 2 rows in each cell of the pod, oblong, not winged. Cotyledons incumbent. [Name 

 unexplained.] 



About 10 species, natives of the Old World. Type species: Sisymbrium strictissimum L. 



I. Norta altissima (L.) Britten. Tall Sisymbrium. Fig. 2060. 



SisyDibriitm alfissinnnii L. Sp. PI. 659. 

 Sisy}iibriHni Siiuipistnim Crantz, Stirp. 



1769. 

 Sisymbrium pannonicum Jacq. Coll. i: 70. 1786. 



Erect, 2-4 high, freely branching, glabrous or 

 nearly so. Lowest leaves runcinate-pinnatifid, peti- 

 oled, the lobes lanceolate, often auriculate ; upper 

 leaves smaller, shorter petioled or nearly sessile, 

 very deeply pinnatifid, the lobes linear or lanceolate, 

 dentate or entire, often with a narrow projection on 

 the lower side near the base; uppermost leaves often 

 reduced to linear nearly entire bracts; flow-ers yel- 

 lowish, about 3" broad; pedicels 3"-4" long, spread- 

 ing or ascending, thickened in fruit; pods very nar- 

 rowly linear, stiff, divergent, 2-4' long, i" wide; 

 valves with a prominent midrib. 



In waste places, Nova Scotia to Ontario, British Co- 

 lumbia, Virginia, Missouri, Colorado. Utah and Oregon. 

 Adventive from Europe. A bad weed in the Northwest. 

 Summer. 



Norta Irio CL.) Britton [Sisymbrium Irio L.] differs 

 by runcinate-pinnatifid leaves, the terminal segment usu- 

 ally larger than the lateral ones, and soft ascending pods ; 

 it occurs occasionally in liallast and waste grounds. 



28. CONRINGIA [Heist.] Adans. Fam. PI. 2: 418. 1763. 



Erect glabrous annual herbs, with elliptic or ovate entire leaves, sessile and cordate or 

 the lower narrowed at the base, and middle-sized yellowish flowers in terminal racemes. 

 Sepals and petals narrow. Style 2-lobed or entire. Siliques elongated-linear, 4-angled, the 

 valves firm, 1-3-nerved. Seeds in I row in each cell, oblong, marginless; cotyledons incum- 

 bent. [In honor of Hermann Conring, 1606-1681, Professor at Helmstiidt.] 



About 7 species, natives of Europe and Asia. Type species: Brasiica orientalis L. 



