AMERICAN MIDLAND NATURALIST. 169 
* Flowers red with some 1 yellow and gree 
t Plants 3 dm. more or less in height, leaf- segments small. 
1. A. elegantula Greene, Pitt. 4:14, 1899. Rydb. Fl. Colo. 
06 
Leaves mostly basal on long, slender petioles; flowers com- 
monly 2 cm. in length, pendulous in anthesis; sepals ovate- 
oblong, greenish, 1 cm. long; the yellow laminae of the petals 
one half as long as the somewhat saccate, curved spurs; ovaries 
pubescent, style 15 mm. in length. 
Southern Colorado. Mount Carbon. (Tm. 2202). 
tt Plants taller, leaf-segments large. 
Spurs Bate uniformly. 
2. A. rubicu Tm 
Leaves on Mende petioles sometimes 2 dm. long; flowers 
commonly 3 cm. in length, pendulous in anthesis; sepals oval, 
acute, pinkish, 1 cm. long; the light yellow laminae of the 
petals one-fourth as long as the slender spurs; ovaries glab- 
us. 
Wasatch Mts., Central Utah. (Tm. 2400.) 
Spurs somewhat saccate curved. 
3. A.formosa Fischer in DC. prodr. 1:50, 1824. T. & G. Flora 
1:30, 1838. Planch. Fl. des Serres 8:125, t. 795. Gray, 
Syn. Fl. 1:44, 1895. 
TA: cadenas var. formosa. Wats. Bot. King's Exp. 10, 
1871. 
Leaves on long petioles; lateral leaflets nearly sessile, the 
terminal short-stalked; flowers nearly 3 cm. in len du- 
-lous in anthesis; sepals ovate-lanceolate, acute, 1 cm. or longer; 
the yellow, truncate or rounded laminae of the petals 5 mm. or 
longer, the oes spur twice as long: ovaries pubescent, styles 1 
cm. or long 
Western E Utah and Idaho and westward. (Sawtooth Mts. 
Idaho. Tm. 2560 and 2785.) 
** Flowers blue with some white or varying to white. 
+ Flowers small. : 
4. A. saximontana Rydb. in Gray, Syn. Fl. 1:43, 1895; Fl. 
Colo. 136. 
Glabrous, 2 dm. more or less in height; leaves small; sepals 
oval-oblong, 1 cm. in length; the yellow laminae of the petals 
somewhat shorter than the sepals and exceeding the blue, hook- 
ed spur; ovaries glabrous. 
orado. 
Du Vise large. 
$ Spurs 3 em. more or less in length. 
a. does light blue. 
