174 



CRUCIFERAE. 



Vol. II. 



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



Erysimum officinale L. Sp. PI. 660. 1753. 

 Sisymbrium officinale Scop. Fl. Carn. Ed. 2, 2 : 26. 



1772. 

 5. leiocarpiim Jord. Diag. i ; 139. 1864. 



Erect, more or less pubescent, or glabrous, l°- 

 3° high, with rigid spreading branches. Leaves 

 runcinate-pinnatifid, 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 i" long, «rect in fruit; 

 flowers yellow, li" broad, pods s"-7" 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. Calii^ornia mustard. Bank-cress. 

 Scrambling rocket. 



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



Biennial herbs, with alternate pinnatilid 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-lobed. 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.) Britton. Tall Sisymbrium. Fig. 2060. 



Sisymbrium allissimum L. Sp. PI. 659. 1753. 

 Sisymbrium Sinapistrum Crantz, Slirp. Aust. Ed. 2, 52. 



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 ; flowers yel- 

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

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

 rowly linear, stifif, 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 ballast 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-angIed, 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 Helmstadt.] 



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



