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PRIMULACEAE. 
Calyx-tube in fruit obpyramidal, its green teeth surpassing the capsule. 
Bracts of the involucre ovate or oblong. 2. A. occidentalis. 
Bracts of the involucre lanceolate or subulate. 
Calyx-teeth erect, lanceolate, usually shorter than the tube. 
Peduncles, pedicels and calyx-lobes densely puberulent, the latter ex¬ 
ceeding the fruit. 3- A. puberulenta. 
Peduncles and pedicels sparingly puberulent or glabrous; calyx-lobes 
glabrous or nearly so, not exceeding the fruit. 
Corolla longer than the calyx. 
Peduncles 1-2 dm. high, many times longer than the strongly 
ascending or suberect pedicels. 4. A. pinetorum. 
Peduncles less than 3 cm. high, often equalled or exceeded in 
length by the spreading pedicels. 5. A. subumbellata. 
Corolla shorter than the calyx. 6. A. diffusa. 
Calyx-teeth more or less spreading, ovate-triangular, foliaceous, equalling 
or exceeding the whitish tube ; corolla shorter than the calyx. 
7. A. sublifera. 
Calyx-tube in fruit hemispherical; teeth broadly triangular. 
8 . A. filiformis. 
1. Androsace carinata Torr. (A. Chamaejasne A. Gray; not Host.) On 
alpine peaks from Alb. to Colo.—Alt. 9000-13,000 ft.—Mt. Evans; Pike’s Peak; 
near the summit of the Rocky Mountains; Bottomless Pit; West Spanish 
Peak; Iron Mountain. 
2. Androsace occidentalis Nutt. In dry soil from Ills., Man. and Mont, to 
Mo., Tex. and Calif.—Alt. 4000-8500 ft.—Mancos; foot-hills, Larimer Co.; 
Los Pinos (Bayfield) ; Empire. 
3. Androsace puberulenta Rydb. On plains and hills from Man., Mackenzie 
River and Alb. to N. Mex.—Alt. 5000-12,000 ft.—Plains near Boulder; 
Pike’s Peak; Seven Lakes; Wahatoya Canon; mountain near Veta Pass; 
headwaters of Sangre de Cristo Creek; Gentian Ridge; Veta Mountain; 
Ribbon Lake; Marshall Pass; Cucharas River, above La Veta; Little Veta 
Mountain; near Ironton, San Juan Co.; Mt. Hesperus; Bear Creek Divide, 
west of Mt. Hesperus; Iron Mountain; Carson. 
4. Androsace pinetorum Greene. In the mountains from Mackenzie and 
Yukon to Colo, and Ariz. Scarcely distinct from A. septentrionalis L. — 
Alt. 5000-8000 ft.—Los Pinos (Bayfield) ; Graham’s Park; hills southeast 
of La Veta; Georgetown; Boulder; Soldier’s Canon; Dolores. 
5. Androsace subumbellata (A. Nelson) Small. Along mountain streams 
from Mont, to Colo, and Ariz.—Alt. 9000-12,000 ft.—Berthoud Pass, near 
Georgetown; Ironton Park, 9 miles south of Ouray; Pike’s Peak; Gore Pass; 
source of Leroux, above Graymont; Beaver Creek; Cameron Pass; Grizzly 
Creek; Deep Creek. 
6. Androsace diffusa Small. In the mountains mostly along rivers from 
Mackenzie and B. C. to N. M. and Ariz.—Alt. 6000-11,000 ft.—Massif de 
l’Arapahoe; Pike’s Peak; Upper La Plata River; Veta Pass; North Park 
near Teller; along the Michigan; Van Boxle’s ranch, above Cimarron; Silver 
Plume; foot-hills, Larimer Co.; Mancos; Georgetown; Mt. Harvard; on 
Turkey Creek and tributaries; Glenwood Springs, Garfield Co.; hills above 
Mancos; Pennock’s mountain ranch; vicinity of Como; Bosworth’s ranch, 
Stove Prairie; along Purgatory River, Trinidad; Rist Canon; above Manitou; 
gulch west of Pennock’s; Dolores. 
