572 BRASSICACEAE 
5. A. Burkii d Small Stem nearly 1 m. tall or less, glabrous and 
ometim laucous, simple or with few erect ben cauline s elliptic 
or MiB DUDEN CCo uc to lanceolate, or linear-lanceolate, 1.5—6 c ong, a 
or aeutish, entire or saliently toothed, sessile and uu Pens m d 
at the me comp 
Ea -elliptie, be rd 4.5—5.5 mm. long, obtuse: petals white or yellow- 
tinged, TES "spatu ulat epa mm. bn Pisis sagittate, acute: pod drooping, 
narrowly | linear, 7-9 m ong, curved, 2 mm. wide or less: seed suborbicular, 
1-1.5 mm. in dia BM ae peer all around. j vi 
Porter]-—Dry hillsides or bluffs, various provinces "N of Coastal Plain, N. C. 
to Mo. and Vt.—Spr. 
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laevigata (Muhl.) Poir. ae em 1 tall or less, glaucous, glabro 
ith erect or ascending branches: cauline p^ ves Yos a to lanceo ae or 
linear-lanceolate C dun us or saliently few-toothed, sessile o 
-— clasping: rac eme ‘strict : sepals linear to linear elliptic, ‘becomin ng 3 5-4 
m. long, obtuse: petals white, spatulate, 4-5 m p ng: s rounded at 
the apex: pod drooping, very narrowly linear, ele long, n ved, less than 
2mm. wide: seed elliptic, about 2 mm. long, wing- margine ed on sides, de- 
cidedly pe at the apex.—Woods Ed rocky ae various Se rarely 
Coastal Plain, Ga. to Ark., N. D., Ont., and Que 
7. A. canadensis L. aoe m. tall or less, usually sparingly ee a 
least below oe or with ascending branches: cauline leav -12 e 
long, o often sparingly nukes scent; blades oblanceolate, -ellipti Or P ne 
thin, entire, sinuate or dentate- serrate, cg eae e base, sessile: sepals 
broadly elliptic, becoming about 3.5 mm. long, Au. petals greenish- 
white, oblanceolate, 5-6 mm. long: indc ‘oblong, obtuse or minutely pointed: 
pod drooping, narrowly linear, 5-7.5 em. long, 3-4 mm. wide, oe see 
orbicular- reniform, about 3 mm. in diameter, broadly winged.—(SICKLE-POD.)— 
Rocky D oe provinces, rarely Coastal Plain, Ga. to Tex., Minn., and 
Ont.—Spr.— 
8. A. dentata T. & G. e 2—6 dm. Nr finely e: M ier usually 
branehed at the base and often with as endin ng branehes abov auline leaves 
1.5-6 em. long, pubescent; ‘blades oblanceolate o ‘elliptio ole or elliptic- 
lan d pa i dentate, sessile, auricled and elasping: sepals elliptie, 
1.5-2 m 
becoming 1. ong, often sparin gly DD escent: ar ns spatulate, 
. 2.5-8 mm. long: a puer ovoid, obtuse or hon sh: pod s eading, dudo] 
linear, 2-3 em. long, about 1 mm. wide, straight: seed elliptic, fully 1 m 
long, wingless.—Rich woods and river- e) various provinces N of NEU 
Plain, Tenn. to Kans., Minn., and N. Y.—Spr. 
. lyrata L. Stem usually branched at the base, the BM erect or 
ascending, 1—4 dm. tall, glabrous or finely hirsute e he base: eauline leaves 
1-3 em. lon , glabrous, spatulate to linear, or r the lower ones individually 
irregularly toothed : sepals elliptic, becom ing 2.5 mm. long, obtuse: petals 
spatulate, 7—9 mm. long: anthers ue ud or ovate- dur abruptly 
brin tod: pod ascending, narrowly linear, 2-3 em. long, abou mm. wide, 
nearly dis seed ee less than 1.5 mm. long, ingless A DRE ROCK- 
CRESS.)— Cliffs, wet rocks, and sandy soil, various provinces, N. C. to Mo., 
Man., and O MIS 
29. SOPHIA Adans. Annual or perennial herbs or shrubby plants, 
densely fine- E o Leaf-blades 2-pinnatifid or dissected. Sepals 4, early 
deciduous. Petals 4, yellow or yellowish, SF longer than the sepals or 
shorter. Anthers pies e ovoid. Style very short. Pod elongate.—About 
20 species of wide geographic fed one eo TANSY-MUSTARDS. 
