STUDIES IN THE CRUCIFERJE.—IV. 311 
to elliptical repand-dentate blades of about equal length: 
the recurved pedicels and also the pods stellate-tomentose, 
the latter globose, 13 lines in diameter, the style somewhat 
longer: petals pale-yellow. 
Collected by Mr. John Macoun, at Medicine Hat, Assini- 
boia, 9 Aug., 1895, and distributed (n. 10,308) as L. Ludovi- 
ciana, but resembling that species only as to fruit; in habit 
and foliage extremely different. 
L. Rosea. Very slender and small, the whole plant 
above ground barely 2 inches high, the foliage almost white 
with a dense but scarcely more than stellate indument, the 
slender peduncles, pedicels, calyx and pods more sparsely 
stellate: caudex very short, simple in younger plants, per- 
haps branched in older ones: basal leaves with short ovate 
or ovate-lanceolate, acute entire blade shorter than the petiole, 
the whole leaf seldom 4 inch long: peduncles with a a few 
oblanceolate sessile leaves and a short few-flowered raceme: 
petals well exceeding the sepals, rose-purple: globose pods 
less than a line broad, the slender style rather longer. 
Old Wives’ Creek, Assiniboia, 2 June, 1895, Mr. Macoun 
(n. 10,509). The smallest species of the gents. 
2. Miscellaneous New Species. 
THYSANOCARPUS AFFINIS. Very erect, 1 to 14 feet high, 
simple below, parted above the middle into several suberect 
racemose branches; herbage glabrous, glaucous: lowest 
leaves not seen, the larger cauline 3 inches long, of narrow- 
lanceolate outline, with several pairs of very prominent sub- 
ulate or often falcate-incurved teeth, the base slightly auri- 
cled, those of the flowering branches lance-linear, very 
saliently denticulate: petals very small, not exceeding the 
