. BRASSICACEAE 555 
the others: stem-leaves narrow, erect or ascending; blades sharply pad or 
incised: pedicels finally spreading, 3-4 mm. long: sepals elliptic, about 1 m 
o b i 
g 
suborbicular, d mm. 2 , margined above, notched at the apex.—( FIELD- 
R —Wa 
ESS. POOR-MAN'S PEPP YELLOW-SEED.)—W aste pn fields, and ed 
2 various | provinces s Fla. to Tex. Minn, and Que —(F. T3 d 
W.)—Spr.-fall 
3. ruderale Annual, bu cR uode] scented: stem mostly 1-3 dm. tall, 
commonly did at the base, glabrous or nearly so: leaves r rather numerous, 
e basal with n tifid blades, ue arly wither! ing: cauline leaves more 
us blades narrower, mostly —3 em. pus entire or few- Rodi. racemes 
ultimately open aes numerous pedicels very slender, glabr ur or minutely 
pavesee d 2-3 mm. lon etals wanting or minute: pod oval, 2.5-3 mm. long, 
ng: 
smooth and a. ien and mpl Em Roads ides and waste-places, 
about seaports, Tex. to Fla. and N.S. Nat. of Eu.—Sum 
4. L. densiflorum Schrad. Annual, finely pubescent or puberulent, odorless: 
stem 2—7 dm. tall, more or less br anched: basal leaves and sometimes the lower 
sane with pinnatifid Scu S, due or sparingly pube and E his- 
pidulous: upper stem-leaves narrow ised or toothed, erect or ending: 
P edicels eco ng 2-3 m dono udin g or curving out, ge ng ne fruiting 
raceme much thicker n the top: petals rudime nta ary or ing: po 
doomed about 2.5 mm. broad, glabrous, notehed at the one wing- Peu 
pex.—Dr D - oil and waste- places, various provinces, Tex. to B. C., Me., and 
N. C.—Spr fall. 
a. THLASPI [ Tourn. L. Annual or perennial erect or depressed caules- 
cent herbs. Leaf-blades entire or toothed, those of the upper leaves aurieulate- 
elasping. Racemes inconspicuously bracted 
or bractless, elongating. Sepals rather 
broad. Petals white or daa longer 
than the sepals, equal or nearly Fila- 
ments stout: anthers short. Pods priis 
obovate or cuneate, winged, notched at the 
apex 
1. L. Annual, 1-5 dm. tall, 
glabrous: blades of the lower cauline leaves | 
spatulate e, those of the upper 
eauline leaves sagittate, 1.5-5 à 
ur iN sepal ong or oblong-ovate, 
a, 2.5-3 mm. long: pods sub- 
orbicular to oe 1-1.5 em. broad, broadly winged.—(FIEL 
PENN YCRESS. EN ED.) — Waste-places, roadsides, and fields, various 
provinces, N. C. to Ark. Kn. Man., and Que. Nat. of Eurasia.—Spr.-sum. 
4. LESQUERELLA S. Wats. Annual, biennial, or perennial herbs. Leaf- 
blades entire, undulate, or pinnatifid. Raceme simple or sometimes branched. 
Sepals 4, usually pubescent like the leaves. Petals 4, of a spatulate type, often 
broadly so, yellow (or rarely white or purplish). Stamens 6: filaments slender 
throughout or enlarged or winged near the base: anthers oblong or sagittate 
Style les few. Pod globular oblong or ovoid, rare d 
slende Ovules : glo 
Seed oea margined —About 35 species, American.—$Spr.—BLADDER-PODS. 
