454 MINNESOTA BOTANICAL STUDIES. 
the spurs; bractlets of lower pedicels lobed; bractlets of upper 
pedicels slender and near the flowers; sepals about equal to 
spur in length, blue within, tinged with yellow outside; upper 
petals yellow with blue tips; lower ones either blue or yel- 
lowish, 2-lobed with a few long, white hairs on inside of lobes: 
follicles 3, large, slightly spreading ; seeds nearly black, coats 
roughened, forming slight wings at the angles. Cool banks of 
ravines in plains at base of the Sierra Madre, Chihuahua, Mex. 
Collected’ first ‘by 'C. G.: Pringle (n. 11384), Sept.’ 27) aeuge 
Differs essentially from DY. scopulorum in its finely dissected 
leaves (Tt). 
51. D. leptophyllum Hemst. Diagn. Pl. Nov. 2: 18. 1879. 
Stem 3 to 4 feet high, glabrous, somewhat branched: leaves 
glabrous, deeply 5-parted, and cut into oblong to linear lobes; 
bracts entire, linear: inflorescence open, few-flowered ; pedicels 
I to 2 inches long; bractlets remote from flower: flowers large, 
blue; spur large; sepals puberulent, ovate, obtuse, 24 inch 
long; petals dull yellow; upper ones slightly 2-lobed, nearly 
glabrous; lower ones deeply 2-lobed, slightly bearded: folli- 
cles 3, densely villose when young, half inch long when mature, 
not spreading: seed slightly winged, and transversely wrinkled. 
October. San Luis Potosi and Montes San Miguelito, Guana- 
juata, southern Mexico (f). 
52. D. Wislizeni ENcELM. in Wisliz. Tour N. Mex. 106. 
1848. 
Stem simple, 2 to 2% feet high, slender, glabrous, glaucous ; 
petioles elongated, lower ones dilated at base: leaves cut into 
linear segments; pedicels long: flowers few, spur 2% inches 
long, blue, slightly pubescent outside; the outer sepal acute, 
others obtuse: follicles glabrous even when young. Wislizeni 
region, Mexico. Later found near Cosihuiriachi, 8,000 feet. 
In flower in Sept. (f). 
EXCLUDED. 
D. urceolatum Jaca, Coll. 1: 153, 1786, is figured in Bot. 
Mag. n. 1791, but no nativity is given. From character it may 
be allied to D. exaltatum, but it is probably not American. 
