''0 CRUCIFKR^. (mustard FAHril.T.) 



•what toothed ; /Ws nparji/ crrrt on jw/ short pedlreh, elonrjnled (3' -4' loTif]:), ex- 

 actly 4-si(k-(i ; stigma 2-]ol)cil. — Oliio (on limestone cliffs) to Illinois, and 

 MHithwcstward. Jnnc, July. — Plant stonf, 10-2° liij,^], ; the crowded briiiht 

 orange-yellow (lowers as larjjc as those of the Wall-flower. Petals orbicular, 

 on very slender elaws. 



8. SISYMBRIUM, L. Hedge Mlstakd. 



Pod terete, flattish, or 4-6-sided; the valves 1-3-ncrved. Seeds oblong, 

 maruinless. Cotyledons incumbent. Calyx open. — Flowers small, white or 

 yellow. (An ancient Greek name for some plant of this family.) Ours arc 

 annuals or biennials.^ 



1. S. officinXle, Scop. (Hedge Mustard.) Leaves runcinate ; flowers 

 very small, pale yellow; pods uwl-shapcd, close pressed to the stem, scarcely 

 stalked. — Waste places. May -Sept. — An unsightly branched weed, 20-3° 

 high. (Nat. from Eu.) 



2. S. TuALi.VxA, Gaud. (Mocse-ear Cress.) Leaves oliovate or Monr], entire 

 or barely toothed ; flowers white ; pods linear, somewhat 4-sided, longer than 

 the slender spreading pedicels. (Arabis Thaliana, L. ; the plant resembles A. 

 lyrata.) — Old fields and rocks, Massachusetts to Kentucky. April, May. — 

 A span high, slender, branched, hairy at the base. (Nat. from Eu.) 



3. S. caneseens, Nutt. (Tansy Mustard.) Leaves 2-pinnatiJid, often 

 hoary or downy, the divisions small and toothed ; flowers yellowish, very 

 small ; pods in long racemes, oblong-club-shaped or oblong-linear, shorter than 

 their mostly horizontal pedicels; seeds ^-ranked in each cell. — Penn. and New 

 York (Lucifer Falls, Tompkins Co., ./. IF. Chich-.rin;/) to Lake Superior, thence 

 southward and westward. June -Aug. 



S. SoriiiA, L., with slender linear pods nearly erect on ascending pedicels, 

 and one-ranked seeds is nat. from Eu. in Canada East. — S. i.ncisum, Engelm., 

 dift'ering only in the shorter jjods widely spreading on horizontal pedicels, is wild 

 beyond the Mississippi. 



9. BRASSICA CBrassica and Sinapis), Toum. 



Pod linear or ol)long, nearly terete or 4-sided, with a stout 1-sccded beak or a 

 rigid style ; valves 1 - .")-nervcd. Seeds globose, one-rowed. Cotyledons incum- 

 bent, folded around the radicle. — Annuals or biennials, with yellow flowers. 

 Lower leaves mostly lyrate, incised, or pinnatifid. (The Latin name of Cab- 

 bage. Sinapis is the Greek StVan-t, which is said to come from the Celtic nop, 

 a turnip.) 



1. B. SixApfsTRUM, Bois.sier (or Sinapis arvevsis, L., the English Char- 

 lock), with knotty pods, fully one third occupied by a stout 2-edged beak 

 (which is either empty or one-seeded), the upper leaves barely toothed, is a 

 noxious weed in grain-fields, from Pennsylvania and New York westward. 

 (Adv. from Eu.) 



2. B. (or SiN\ris) .ii.i'.A. (Wiiiti; MrsTAUD.) Pods bristly, ascending on 

 sjjreading pedicels, more than half its length occupied by the sword-shaped one- 

 seeded beak; leaves all pinnatifid; seeds pale. (Cult, and adv. from Eu.) 



