BRASSICACEAE 
Seed oblong, winara a the apex, margined on the sides: 
petals 4-4.5 mm 6. A. laevigata. 
Outer sepals broad, e to elliptic-ovate: plant pubescent, at 
least below: pod 2.5-3.5 mm. wide. 7. A. canadensis. 
III. LYRATAE 
Blades of the basal leaves toothed: stem and leaves finely gray- 
ish- pubescent : petals slightly longer fun the sepals: anthers 
ovoid: pod finely pubescen 
Blades of the basal lo de lyrate-pinnatifid : stem and leaves 
glabrous or nearly so: pe wice as long as the sepals: 
anthers sagittate: pod glabro 9. A. lyrata. 
1. A. virginica (L.) ws Stem branched at the base, the branches 
ascending or decumbent, 1-4 dm. tall, sparingly short- bin or nearly gla- 
9o 
A. dentata. 
long: petals white, spatulate, 2.5-3 mm. 
long: anthers ovoid, apicula ae pod ascend- 
ing, linear, 2-3 em. long, less than 2 mm. 
wide, deris Sed sah orbicular, about 1 
in meter, narrowly winged. [A. 
m MN c. A. Meyer]— Sandy or stony 
soil, woods, prairies, Mops places, and cult. 
Sor various provinces, Fla. to Tex., 
Kans., and Pa.—Spr 
Stem 
broached at ore 2 3-7 dm. tall, Hie e ascending, closely hirsute: cauline 
leaves 2-7 cm. long, hirsute; blades ov ate, oblong, or la pee paria da ies 
ses sile and da asping: sepa als o oblong to ovate-elliptie, becoming 5—6 long: 
petals white, pag ee 7 pep 6-10 in Pu nS p apiculate: 
pod spreading or ascending, very Snell. , 2.5-4 em. long, abou 
Él straight or slightly eurved: seed e elliptic, 01 T: Bor m. long, ese 
ged.—Roeky river-banks, various provinces N of Coastal Plain, Ala. to 
Mo. S Minn., and Pa.—Spr. 
3. A. georgiana Harper. Stem 9 dm. tall or less, yid hirsute below, with 
few erect mostly basal branches: erc leaves 3- 9c . long; bright green, 
Spars ud pubescent on the lower surface and margin tae reg eee -lanceolate 
to lanceolate or li nis eeolate, acute or acutish, entire, or remote ME nd 
saliently dentieulate, m ev a elasping: raceme rather lax: sepal elli ip- 
tie to elliptic-ovate, becom ing 3 mm. long: es white, vede 6—10 
mm. long: anthers sagittate, apiculate: Hes . long: pod ereet, lin inear- 
filiform, 4.5-7 em. long, about 1 . wide: Bu arse Aliptie, about 1.5 
mm. long, narrowly winged. "Shaded river bans Appalachian Valley, Ga. and 
Ala.—Spr. 
4, A. ovata Miehx. Stem 1 m. tall or less, simple or with few erect or ascend- 
ing branehes, short-hirsute or nearly glabrous: cauline leaves d or ascending, 
1-6 em. long, often pubescent; blades ovate, e elliptie, or lanceolate, entire or 
dentate, sessile, slightly au 2d and elasping: sepals elliptie, “becom ing 2—2.5 
mm. Pe petals greenish or greenish-white, spatulate, 3-4 mm. long: anthers 
ovoid, acute: pod erect or nearly so, 2.5—4 em. long, about 1 mm. wide straight 
seeds “broadly oblong, nearly 1.5 mm. long, aie broadly winge ed. [A. hirsuta 
(Fl SE. U. S. D or sandy soil, pou provinces N of Coastal Plain, 
Ga. to Calif., B. C. and Newf.—Spr.—fal 
