PAYSON—NORTH AMERICAN AQUILEGIA. 151 
SPECIMENS EXAMINED, 
Canapa: Sheep Mountain (lat. 59° 05’), Macoun. 
Montana: Little Belt Mountains, Flodman 451. Upper Marias Pass, Canby 13. 
Yogo, Belt Mountains, Williams 764. Park County, Tweedy. 
Wyromine: Northwest Wyoming, Parry 3. Whisky Mountain, Cary 31. Summit of 
Hunt Mountain, Big Horn Range, Jack. 
An anomalous and very remarkable species of this section, showing some relation- 
ship to the section Cyrtoplectrae, to the species of which it has heretofore been thought 
to be related. This has resulted, no doubt, from the fact that A. jonesii possesses 
very short spurs. The large, erect flowers, the long styles, and the straight spurs 
show that it is really much closer to A. caerulea than to the brevistyla group. Its 
extremely cespitose habit, its very small leaves with their closely clustered leaflets, 
and its large flowers on very short scapes give this species an entirely different aspect 
from all other columbines, except, perhaps, A. scopulorum. 
18. Aquilegia caerulea James in Long, Exped. 2: 15. 1823. 
Aquilegia macrantha Hook, & Arn. Bot. Beechey Voy. 317. pl. 72. 1839-40. 
Stems 40 to 80 cm, high, usually glabrous below, more or less viscid-pubescent in 
the inflorescence; leaves mostly basal, biternate, reduced upward and occasionally 
becoming entire in the inflorescence, the leaflets glabrous, glaucous beneath, variable 
in size but usually large; flowers 6 to 8 cm. long, 6 to 10 cm. across, usually erect; 
sepals typically a deep blue purple, ovate-oblong, acute or obtuse, spreading, 30 to 
40 mm. long, exceeding the laminz about 10 mm.; lamin white, ovate-spatulate, 
rounded at apex; spurs usually pale blue, slender, straight or spreading, 35 to 45 
mm. long; styles 7 to 9 mm, long; ovaries densely pubescent; follicles 5 to 8, 2 to 3 
em, long, the tips spreading. 
TYPE LOCALITY: On the divide between the Platte and the Arkansas, Colorado. 
Rance: At higher elevations in the Rocky Mountains from northern New Mexico 
to Montana. 
Rererences: Hook. in Curtis’s Bot. Mag. 90: pl. 5477. 1864. Jones, Zoe 4: 256. 
1893. Robinson, Syn. Fl. 1:44, 1895. Davis, Minn. Bot. Stud. 2:342.1899. Rydb. 
Colo. Agr. Exp. Sta. Bull. 100: 136, 1906. A. Nels. in Coulter, New Man. Rocky 
Mount. 191. 1909. Woot. & Stand]. Contr. U. 8. Nat. Herb. 19: 248. 1915. 
SPECIMENS EXAMINED (localities only). 
Cotorapo: Larimer County; Uncompahgre Divide; Telluride; Arapahoe Peak; 
Tolland; Poudre River, Larimer County; North Cheyenne Canyon; Clear 
Creek; Mount Baldy; Mount Ouray; near Georgetown; Middle Park; Came- 
ron: Pass; Uncompahgre Canyon; Estes Park; Leadville; Berthoud Pass; 
Hahns Peak; Como and vicinity; Florissant; above Beaver Creek; forks of 
Poudre and Big Tooth Rivers; Horsetooth Gulch; Table Rock; Graymont; 
Rist Canyon; Manitou; Pikes Peak; near Breckenridge; Mount Hesperus; 
Anita Peak; Bob Creek, Montezuma County. 
Montana: Lima. 
Wyomine: Laramie Hills; Telephone Canyon; Medicine Bow Mountains. 
Uran: Geyser Canyon; Beaver Creek; Big Cottonwood Canyon; Dyer Mine, Uin- 
tah Mountains; Thousand Lake Mountain; Mount Nebo; Mount Ellen; La 
Sal Mountains. 
New Mexico: Pecos River National Forest; ‘‘northern New Mexico.”’ 
Aquilegia caerulea is without doubt the most showy and splendid American species 
of thisgenus. While it is found in most of the Rocky Mountain States, it was chosen 
as the State flower of Colorado, and in that State it reaches its finest development. 
There, in the Canadian zone, among the aspens, spruces, and firs, it is not uncommon 
to see a hillside meadow so completely covered with A. caerulea as to hide all other 
vegetation and to make it seem a fairyland of huge, dancing, blue and white stars; 
