62 CRUCIFER &%. CORONOPUS. 
LEPIDIUM. 
or only 4or 2. Anthers short, somewhat didymous. Stigma 
sessile, nearly or quite simple. Pods more or less distinctly did- 
ymous, the valves thickish, often sculptured or tuberculate fall- 
ing off as 1-seeded closed or nearly closed nutlets. Embryo fold- 
ed above the. base of the incumbent cotyledons. 
©. pryymus Smith Fl. Britt. ii, 691. Annual or biennial: stems num- 
erous and siender: leaves short an inch or less long pinnately parted with 
7-9 lanceolate entire or sparingly toothed segments: flowers very small, 
greenish white: petals minute or none: pods small, 1-114 lines broad 
notched at both ends, thus appearing transversely 2-lobed; valves turgid 
and finely wrinkled. In moist soil and ditches, California to Vancouver Is- 
land near the coast, and along the Atlantic seaboard. Introduced from 
Europe. 
©. Rvetin All. Ped. n. 684. Annual or biennial: stems rather stout: 
leaves an inch or more long pinnatifid with narrow lanceolate entire or 
sparingly toothed segments: pods flattened 114-2 lines broad, not notched 
above nor divided into 2 lobes, strongly roughened and somewhat crested 
by radiating prominences. Roadsides and rubbish heaps, Poriland Ore- 
gon, and the Atlantic States. Introduced from Europe. 
31 LEPIDIUM Tourn. Inst. 215, t. 109. L. Gen. n. 801. 
Low herbs with small pinnatifid leaves and small white or yel- 
low flowers in terminal racemes. Sepals short, ovate or elliptic- 
oblong, obtuse, equal at base, more or less spreading. Petals en- 
tire, rounded at the apex: sometimes abortive or none. Stamens 
free, unappendaged, all 6 present or by abortion only 4 or 2 pre- 
sent, these representing the two larger pair. Styleyslender and 
more or less elongated, or none. Pods orbicular or ovate, emargin- 
ate or deeply notched at the apex, strongly compressed contrary 
to the narrow partition. Valves acutely carinate; the cells 
1-seeded. Seeds not winged. Cotyledons ineumbent or rarely 
accumbent. 
§ 1 Style slender, sometimes rather short but distinctly de- 
veloped and persistent. Cotyledons incumbent. 
L. montanum Nutt. T. & G. Fl. i, 116. Puberulent or nearly gal- 
brous: stems several from a ow somewhat ligneous root, 8-15 inches 
long, decumbent and spreading in a somewhat circular manner: radical 
leaves more or less bipinnatifid with short-oblong acute segments ; upper- 
most leaves trifid or linear and entire: petals nearly twice as long as the 
oval oblong sepals: style conspicuous: pods a line broad elliptical, slightly 
emarginate, wingless or obscurely winged above, with short acutish teeth. 
Plains and mountain valleys, Washington to California and the Rocky 
Mountains. 
L. integrifolia Nutt. 1. c. Glabrous or puberulent: stems several 
from a single stout root, branching from the base: leaves oblong, oblan- 
ceolate or spatulate, acute or apiculate, thickish, 1-2 inches long, 244-3% 
lines broad, entire: racemes single and terminal, or more commonly sey- 
eral, 1-2 inches long: pedicels spreading, 3-4 lines long: petals obovate, 
white, about twice the length of the broad membranaceous sepals, indis- 
tinctly and broadly clawed, deciduous with the sepals: stamens 2: capsule 
ovate-oblong 144-2 lines long, barely retuse inconspicuously reticulated 
when quite ripe. Southeastern Washington to the Rocky Mountains. 
L. campestre R. Br. in Ait. f. Kew ed. 2, iv, 88. Pubescent: stems 
erect, simple and very leaty up to the inflorescence, a foot or more high: 
e 
