4’ Lepidium L. 
Small annual or biennial herbs. Leaves pinnatifid, toothed or entire. 
Flowers white or whitish, small, the corolla sometines mimuite or wanting. 
Capsules orbicular or oval in outline, strongly flattened contrary to the 
partition, notched at the apex with a narrow wing on either side. Seeds 
solitary in each chamber, pendulous. 
densiflorum 
*beT-L- Bit we 
o Leaves oblanceolate, none clasping at the base J. Le 
o Leaves prevailingly oblong or ovate at least 
4 above the middle of the stem, clasping the stem ‘ 
2 Leaves 1.5-2.5 cme wide; pods obcordate, not winged 2. Le Draba j 
2 Leaves less than 1.5 cme wide; pods oval, winged 3. Le campestre 
1. Le oper dis Peppergrass. Erect annuals, 40-50 om. tall, 
simple below, branching above, ashy-puberulent throughout with a minute 
gramlar pubescence; leaves oblanceolate, 2-3 cm. long, those in the lower 
axils sharply and narrowly toothed, the teeth ascending, those above subentire; 
flowers small and greenish, petals minute or wanting; pods oval, 3 mm. long 
on slender subequal pedicdsfl, notched lightly at the apex; seeds 1.3 mn. long, 
flattened, lightly margined. 
An occasional weed in waste places and around dwellings; naturalized 
from Europe. Wallace, Epling and O@fford.8112. C. L. Hitchcock reports 
var. elongatum (Rydb.) Thell. from Lewiston (Madrono 3; 280). In this 
the pods are 5.5 mm. long, 
Hoary Cress. 
2. Le Draba L. Erect perennial herbs 30-50 cm. tall, branching fran 
the base, the stems ascending, thinly pubescent with mostly simple hairs; 
lower leaves oblanceolate, the median leaves elliptical, narrowed toward the 
base and clasping, all 5-6 cm. long, 1.5-2.5 om. wide, sparingly dentate, 
mostly obtuse, thinly pubescent with forked ami simple hairs; inflorescence 
branched, the branches corymbose; sepals 2 mm. long, glabrous; petals white, 
5-5 mme long, attenuate below; pods obcordate, 4.5 mm. wide, tipped by the 
persistent style. 
Occasional in waste places in the lower valleys; naturalized from Europe. 
no —>Bonner's Ferry, Epling. 
ymenonn*rs ooseons be Ay ..eye. Verennial with the asvect of Levidium breba, 
ee, ee am eae dete 4 i us ae He ipa a es an _ ———— oS = 5 anne nem - 3 
the racenes Con osced in flowers petals white, 3-4 ma, longs; pods indehiscent, 
berulent, narrowed to the base, not at all cordate, —= —, & 
we ee ee -—- - _——-- 
4.04) maPRecont introduction trom Siberia, seid to heve beon brought.in with_alf: lfa 
secd, to be oxoceced in our area, i‘orms large colonicsy, ditficult to eradicat ey 
y 
by the strong long roovstocks et rea | 
19) Lne SUrOons LOLLES é J sg - = —— 
