262 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. puberulent a. 

 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. siiblifera. 

 Calyx-tube in fruit hemispherical; teeth broadly triangular. 



8. A. filiformis. 



1. Androsace carinata Torr. (A. Chamacjasne 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 

 1'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; Glemvood 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. 



