Dentaria. CRUCIFER^. 59 



3. Dentvria maxima, Nutt. Large Tooth-wort. 



Stem tall ; leaves 5-7, alternate, remote, the margin a little rougliened ; leaflets somewhat 

 oval, incisely and acutely toothed ; lateral ones lobed ; (flowers pale purple.) — Nutt. gen. 

 p. 66 ; DC.prodr. l.p. 155; Torr. ^ Gr.fi. N. Am. 1, p. 87. 



Stem often nearly two feet high. Tubers concatenate (Nutt.). 



Western part of the State of New- York (Nuttall). This must be an extremely rare plant, 

 as I am not aware of its having been found by any botanist except its discoverer. 



Tribe II. SISYMBRE^. DC. 



Silique longitudinally dehiscent ; valves nearly plane, or somewhat terete and carinate : 

 septum linear. Cotyledons plane, incumbent (i. e. with the radicle applied to the back of 

 one of the cotyledons, |j O), contrary to (i. e. with the edges towards) the septum. Seeds 

 not bordered. 



7. SISYMBRIUM. Allioni ; Endl. gen. 4906. bedge MUSTARD. 



[An ancient Greek name applied to some plant believed to be of thia genus.] 



Silique somewhat terete. Stigmas 2, somewhat distinct, or connate and capitate. Sepals 

 equal at the base. Seeds ovate or oblong. Cotyledons sometimes oblique. — Herbs of 

 various habit. Flowers small, mostly yellow or white. 



^ 1. Velarum, DC. Siliques subulate, terminated with a short style : pedicels very short, thickened 



and appressed to the axils after flowering. 



1. Sysymbrium officinale. Scop. Common Hedge Mmtard. 



Leaves runcinate, and, as well as the stem, hairy ; flowers very small (yellow). DC.prodr. 

 1. p. 191 ; Hook. ft. Bor.-Am. 1. p. 61 ; Darlingt. fl. Cest. p. 386. Erysimum officinale, 

 Linn. ; Michx.fl. 2.p. 31 ; Pursh,fl. 2. p. 436 ; Ell. sk. 2. p. 148 ; Bigel.fi. Bost. p. 253. 



Annual. Stem more or less hairy. 1-2^ feet high, with numerous, spreading, somewhat 

 curved branches. Upper leaves somewhat hastate. Racemes elongated. Petals a little 

 longer than the sepals. Siliques 6-8 lines long, tapering to a point. Seeds oval, about 4 

 in each cell. 



Road-sides and waste places : introduced from Europe. Flowers from May to September. 

 This plant has long been reputed as a diuretic and expectorant, but its powers are probably 

 Tcry feeble. 



