BRASSICACEAE 559 
Ovary narrow: style very stout: stigma dis- 
coid. Pod elongate, linear.—One species. 
S. Nasturtium-aquaticum L. Stems dif- 
use or floating, 1-6 dm. long: leaf- "blades 
unequally pinnate, 2-15 cm. long, the seg- 
ments PM ar: pet zm white, 3—4 mm. long: 
pods linear, 10-25 mm. long, curved. [Nas- 
tu nm ffoi vale R. Br. Roripa Nasturtium 
f., and Can 
Nat. of Eu.—Spr fall — Frequently used as 
a garnish and a ondin 
10. ERYSIMUM [Tourn.] L. Annual or perennial herbs. Leaf-blades 
entire, lobed or pinnatifid. Raceme elongating, strict. Sepals 4, rather nar- 
row, nearly equal. Petals 4, d LE | 
ES ij 
l officinale L. Stem 3-12 dm. tall, the 
ee spreading: leaf-blades 2-20 cm. 
long, runcinate- ee the oe irreg- 
zd entire, toothed, or lobed: sepals 1.5-2 
long: ae _ yellow, spatulate: pod 
do 10-1 long, slender-beaked. 
[Sisymbrium ‘oficinate (L.) Scop.]— (HEDGE 
than the sepals, yellow, spat 
Ova 
MUSTARD. n e places and Pai -— throughout cult. N. A. Nat. 
of Eu. 
6: anthers ovoid. ary narrow: ee very 
short or obsolete: stigma 2-lobed. Pod elon- 
gate.—About 3 species, natives of the Old 
World. 
11. IODANTHUS T. & G. Perennial herbs. Leaf-blades toothed to 
lyrate- Lais Racemes or panicles elongate. Sepals 4, the lateral ones more 
or less appendaged near the apex. Petals 4, white or violet, spatulate. 
| Run de 6: anthers elliptie to ovoid. Style 
short. Pod elongate.—One species. 
l. I. pinnatifidus (Michx.) Steud. Stem 3- 
10 dm. tall: blades of the lower e often 
e e the terminal segment larger, in- 
eised or with flaring teeth, blades of the 
upper RAUM dentate or ineised; ; petioles 
broad, clasping: sepals elliptic, 3—4 mm. 
mon La. Tex. Minn., Tenn., and 
Pa.—Spr. 
12. NORTA Adans. Biennial, tall, sometimes diffusely branched, herbs. 
Leaf-blades toothed or pinnatifid. Raceme lax, becoming very lax in age, 
