(Toe ) ile bre 
3- Le campsastre Erect anmals of varied aspect, 
10-40 cme tall, ashy-green, pubescent with short spreading hairs, the lower- 
most leaves often tufted, the blades oval, 1-2 cme long, abruptly narrowed 
to a petiole as long or longer, the stem leaves 1-3 cm. long, mostly oblong 
or oblong-lanceolate, sessile, clasping, acutely auricled at the base, 
denticulate; inflorescence commonly 5-branched, the branches ascendingy5-15 
cme long; pedicels 2-3 mm. long in flower,becoming 5-6 mn. long in fruit, 
widely extended; pods 5 mm. long, oval, winged, the wing broadest at the apex, 
half as long as the pod proper. 
An occasional weed, naturalized from Europe. Pp B 
0 ——> Hope, Epling. 
G6. Thlaspi L. Penny Cress. 
: 
: 
Glabrous anmal or perennial herbs. Leaves simple, clasping, entire ; 
or toothed, those on the stems auricled. Flowars white. Sepals oval, thin® 
margined, erect. Petals entire. Capsule orbicular or obovate in outline, 
strongly flattened contrary to the partition, notched or entire at the apex, 
winged$ seeds several. ‘ 
0 Petals 3-4 mme long; pods 12-15 mm. in diameter /, T. arvense 
6 Petals 4-6 mm. long; pods 5-6 mm. long &. I. cochleariforme | 
1. Te arvense Le Anmal, erect, 30-50 cm. tall, glabrous, simple below, 
branching in the upper axils; basal leaves oblanceolate, even spatulate, narrowed. 
to a mergined petiole,soon withering; cauline leaves oblong-lanceolate, obtuse, | 
3-4 CMe long, sessile auricled and clasping, the margins toothed; flowers white, 
3-4 mme long; pods 13-15 mme in diameter when mature, very flat, the wing 
commonly 3 mm. wide, the notch 1-3 mm. deep, pedicels about 1 cm. long. 
A frequent weed in or near the grassland; naturalized from Europe. 
2. T. cochleariforme DC. Perennial, 15-25 om. tall, glabrous throughout 
and glaucous; leaves in a basal tuft and cauline, the basal on slender petioles 
5-10 mms long, the blades 10-20 mm. long, oval or obovate, subentire or repand, 
the stem leaves about half as long as the internodes, sessile, clasping, ovate, | 
auricled at the base, the auricles 2-3 mm. lons, entire; flowers white, petals 
4-6 ma. long, the sepals 1.5=2 mm. long, green with scarious margins; pods 5-6 % 
mne long, 3-565 mm. wide, cuneate, rounded-truncate at the apex, the style 
1-1.5 mn. long, the partition (after dehiscence) 1-1.5 mm. wide. (7. glaucum 4 
al —>iA. Nels. var. hesverium Payson), ! 
Freguent on subalpine slopes or in rock crevices or subalpine meadows in 
she soushern part of our regione 
ee ae ae ay hustle 
