CRUCIFERJE. (mustard FAMILY.) 69 



broiix In fhr ffjllntriin/ sprrir.t, c.rrppl (he base of the stem and the hicer or tnjl of 

 railical /dins, ihi.sc iiiuslli/ hirsute.) 



10. A. perfoliita, Lam. (Towkr Mistard.) Tall {2° -4° h\fih) ; 

 glanrons ; stcm-Icavcs olilonj; or ovate-lanceolate, entire, hall'-elasjtinf; by the 

 saf;ittatc base ; prtals t/dloirish-irhite, little lonijer than the cali/r ; jiods veri/ niiirow 

 {3' lon-x) <ni(l pedirh'x strfrtli/ erect. (Turritis {glabra, L.) — Kocks and fields, 

 scarce and iHTlinps introduced southward ; more common northward. (Ku.) 



11. A. Drummondii, Gray. Scarcely glaucous, 1° - 2° hi;;h ; s/em- 

 leavcs htnceolate or ohhmtf-linear and sagittate (I' -2' long) with narrow auricles, 

 or the lowest spatulate ; petals white or rose-color, full y twice the Icnr/lh of the oili/x ; 

 pedicels and flat /Ws loosely erect, or ascending, or even s/ireading ; seeds wing- 

 margined, when nuiturc little narrower than the partition. (Turritis stricta, 

 Graham.) — Rocky places, from the St. Lawrence in Canada East, to Lewiston 

 {Clinton), Lake Sujierior, and northwestward; also "Chenango Co. New 

 York," Northern Illinois, Vasn/. — Pods 2V-3Vlong, or in var. (T. brachy- 

 carpa, Turr. ij- day) only I'- 2' long. 



6. BAEB AREA, ' R. Br. Winter Cress. 



Pod linear, terete or somewhat 4-sided ; the valves being keeled by a mid- 

 nerve. Seeds in a single row in each cell, marginless. Cotyledons accnmbent. 

 — Mostly biennials resembling Nasturtium ; flowers yellow. (Anciently called 

 The llcrl) of St. Barbara.) 



1. B. vulgaris, R. Br. (Common Winter Cress. Yellow Rocket.) 

 Smooth ; lower leaves lyrate, the terminal division round and iisiuiUy large, the 

 lateral 1 - 4 pairs or rarely wanting ; u])per leaves obovate, cut-toothed, or pin- 

 natilid at the base; pods erect or slightly spreading; or in var. strict.v, ap- 

 prcs.sed ; in var. arcuAt.\, ascending on spreading pedicels. — Low grounds 

 and roadsides : apparently introduced, but indigenous from L. Superior north- 

 ward and westward. (Ku.) 



2. B. pr.ecox, R.Br. (Early Winter C), with 5 -8 pairs of lateral lobes 

 to the leaves, and longer pods on very thick pedicels, — yet probably only a vari- 

 ety of the other, — somewhat cultivated from New York southward as a winter 

 salad, under the name of Scurvv-Grass, — is beginning to run wild. (Eu.) 



7. ERYSIMUM, L. Treacle Must.vrd. 



Pod linear, 4-sided ; the valves keeled witn a strong midrib. Seeds in a sin- 

 gle row in each cell, oblong, niarginless. Cotyledons (often oblitpiely) incum- 

 bent. Calyx erect. — Chiefly biennials, with yellow flowers ; the leaves not 

 clamping. (Name from f'puo), to draw blisters.) 



1. E. cheiranthoides, L. (Worm-seed Mustard) Minutely rougli- 

 ish, branching, slender ; leaves lanceolate, scarcely toothed ; flowers small ; pods 

 small and short (7 '- 12" long), very obtusely angled, ascending on slender di- 

 venjcut pedicels. — Banks of streams, New York, I'enn., Illinois, and northward, 

 July. (En.) 



2. E. asperura, I)C\, var. Arkans^um, Nutt. (Wi-stekn Wall- 

 flower.) Minutely roughish-hoary ; stem simple; leaves lanceolate, some- 



