290 PROCEEDINGS OF THE AMERICAN ACADEMY 
sparingly toothed, 3 to 8 lines long: raceme many-flowered, elongated : 
flowers yellow, becoming whitish, small: pods erect on the short 
divaricate pedicels, elliptic-oblong, obtuse, pubescent, 4 lines long by 
a line broad: style none. — Rocky Mountains of Colorado; South 
Park, Wolf & Rothrock (n. 637) ; near Empire, E. L. Greene; also 
collected by Hall & Harbour.— D. stenoLtosa, Ledeb., is much 
more slender and less pubescent (nearly glabrous above), with nar- 
rower leaves, looser racemes, and narrower glabrous pods acutish at 
each end. — D. Nemorosa, Linn., to which both have usually been 
referred and which is also frequent in the Rocky Mountains, is of lax 
spreading habit, with the ovate-oblong to lanceolate leaves rarely 
rosulate at base, pale yellow flowers, and the usually slightly pubes- 
cent pods (2 to 4 lines long) much shorter than the slender pedicels. 
THELYPODIUM AMBIGUUM. A stout erect glabrous and glaucous 
branching biennial, 3 to 5 feet high: leaves sessile, broadly auricled, 
the lower oblanceolate, coarsely serrate, 6 to 8 inches long, the upper 
ovate to lanceolate, acute, mostly entire: flowers reddish purple, on 
spreading pedicels (3 or 4 lines long) in an open raceme; petals with 
an ovate-oblong blade and rather narrow claw, nearly twice longer 
than the oblong obtuse purplish sepals (2} lines long): pod elongated, 
narrow (3 inches long by less than a line broad), terete and subtoru- 
lose, recurved-spreading ; stipe slender, nearly 2 lines long: stigma 
sessile, capitate. — Northern Arizona, Dr. Newberry on Lieut. Ives’s 
Expedition (Streptanthus sagittatus of Ives’s Report), and Dr. KE. 
Palmer in 1877 (n. 27). Also n. 109, Watson, from Regan’s Valley, 
N. Nevada, is apparently the same. 
VioLa cunEATA. Glabrous: stem a span long, leafy, ascending 
from a short rootstock: leaves rhombic-ovate, acute, attenuate at base 
into a slender petiole, crenately toothed above: petals deep purple, 
more or less bordered or blotched with white, beardless, 4 lines long ; 
spur very short, yellowish: capsule glabrous. — Humboldt County, 
California, on a high open ridge south of Trinity River; V. Rattan, 
June, 1878. Allied to V. ocellata and V. Hallii. 
SrLENE SarGentu. Low and alpine (6 inches high), puberulent, 
cespitose and many-stemmed, with the habit of dwarf forms of S. 
Douglasii, to which it is allied: leaves linear, slightly oblanceolate, 
1 to 2 inches long: flowers 3 to 6: calyx 6 or 7 lines long, cylindrical, 
with short teeth: petals about 10 lines long, the obovate bifid blade 
with a small tooth on each side; auricles broad, laciniately toothed ; 
appendages large and broad, toothed: styles long-exserted: capsule 
narrowly cylindrical, long-stipitate : seeds minutely tuberculate on the 
