- LEPIDIUM. CRUCIFER2. 63 
leaves oblong, obtuse, denticulate, erect, the lower ones narrowed to slen 
der petioles; the upper sessile by along sagittate-clasping base: pedicel- 
horizontally spreading, a little shorter than the thickish, papillose caps- 
sule: petals white: anthers yellow: style slightly exserted from the narrow- 
notch. In wet places, Waldo Oregon and across the continent. Intro- 
duced from Europe. 
§ 2 Stigma sessile or subsessile. Pods emarginate or retuse 
at the apex. Cotyledons (in ours) incumbent. 
L. Menziesii DC. Syst. ii, 539. More or less pubescent: stems slender 
2-12 inches high from an annual or biennial long slender perpendicular 
root, simple, or branched above: radical leaves pinnately parted, petiolate 
ubescent or somewhat hirsute; segments lanceolate, acutish; cauline 
eaves merely toothed, the upper linear and entire: racemes 1-several, not 
contracted near the summit; pedicels slender early spreading, longer than 
the pods: petals 4, white, exceeding the sepals: stamens 2-4: pods orbic- 
ular retuse glabrous about 14% lines in diameter: seeds narrowly winged 
on one edge. Cliffs and sandy or rocky banks, Oregon to Brit. Columbia 
near the coast, not common. 
L. occidentale Howell Eryth. iii, 32. Stems,erect 3-12 inches high 
from an annual root pubescent below with short simple white hairs, pub- 
erulent above, freely branching: leaves 1-3 inches long, the lower pinna- 
tifid with obovate to oblanceolate segments, gradually reduced upwards to 
linear bracts: petals white, obovate, narrowed below to a short claw, 
rounded at the apex longer than the obovate sepals: stamens 4, about 
equaling the petals: pods orbicular, 144 lines broad, on long slender divari- 
cate pedicels: style very short: seeds obovate, retuse below, narrowly 
winged on the outer edge. On rocky hillsides, Umpqua valley, Oregon 
and on cliffs of- Cape Foulweather. Doubtless at other places along the 
coast. 
L. medium Greene Eryth. iii, 36. L. intermedium Gray Pl. Wright, 
not A. Richard. Glabrous or puberulent: stems erect, branched 6-18. 
inches high, from a rather stout annual root: lower leaves 1-2 inches 
long, toothed or pinnatifid; the upper often entire or but sparingly 
toothed, oblanceolate or linear: petals wanting, stamens 2; style very 
short: pods rounded 1-114 lines broad, with short and obtuse teeth: pedi- 
cels spreading, 3 lines long. Sandy places and hillsides, California to 
Brit. Columbia and Utah, east of the Cascade Mountains. — 
L. apetalum Willd. Sp. iii, 439. Stems erect 1-2 feet high, slender, 
odorless; leaves somewhat narrow, dull green, the radical; ones more or 
less ineisely toothed or | pinnatifid ; segments usually acutish: flowers 
closely aggregate, the pedicels remaining nearly erect in flower, but in 
fruit regularly and widely spreading, thus making the racemes appear as 
if contracted just below the summit: petals wanting: stamens 2: pods gla- 
brous, orbicular, retuse on short pedicels. Eastern Oregon to Texas and 
the New England States. 
L. lasiocarpum Nutt. T. &G. Fl.i, 115. Hispidly pubescent: stems 
decumbent branching from or near the base: lower leaves pinnately 
parted, segments usually rather broad, obtuse or rounded, sparingly 
toothed or entire: racemes several: pedicels distinctly flattened, horizon- 
tally spreading, 1-114 lines long: sepals broadly oblong usually purple, 
with thin white margins: petals minute or none: pods suborbicular, thin 
margined near the apex, hispid pubescent upon both faces, or at least 
upon the edge. Southern California to Texas and Colorado. Introduced 
upon R. R. ballast in Oregon, Henderson. 
L. nitidum Nutt. 1.c.116 Glabrous or somewhat pubescent: stems sim- 
ple or branched, 3-16 inches high: leaves pinnately cut into linear acumi- 
nate segments, the uppermost often entire: pedicels flat, 1-2 lines long: 
