ALSINACEAE. 129 



Petals less than i cm. long. 



Sepals tinged with purple ; stem depressed. 5. C. beeringianum. 



Sepals light green ; plant not depressed. 6. C. pilosum. 



Leaves, except the uppermost, linear or linear-lanceolate, acute. 



Leaves of the inflorescence short, broadly ovate. 7. C. oreophilum. 



Leaves all linear or linear-lanceolate or linear-oblong. 



Stem villous with reflexed hairs. 8. C. campestre. 



Stem finely glandular puberulent. 



Leaves thin and soft, all linear or narrowly linear-lanceolate ; midrib not 



prominent. 9. C. scopulorum. 



Leaves thick and firm; midrib prominent. 10. C. occidental. 



1. Cerastium brachypodium (Engelm.) Robbinson. In dry sandy soil from 

 S. D. to Mont., Mo., Tex. and Ariz.; also Mex. Alt. 4000-7500 ft. Moun- 

 tains, Larimer Co.; Pennock's mountain ranch; gulch west of Pennock's; 

 Ft. Collins; gulch west of Soldier Canon; Horsetooth Gulch; Howe's Gulch; 

 Bijou Basin. 



2. Cerastium longipedunculatum Muhl. (C. nutans Ra.) In wet places 

 from N. S. to B. C., N. C., Ariz, and Ore. Alt. 4000-9000 ft. Veta Pass; 

 lola; Veta Mountain. 



3. Cerastium pulchellum Rydb. On alpine peaks of Colo. Alt. 13,000 ft 

 Hayden Peak. 



4. Cerastium Earlei Rydb. In wet places among rocks in the mountains 

 of Colorado. Alt. 9000-12,000 ft. Near La Plata Post Office; Little Kate 

 Basin; Mt. Robinson; Cumberland Basin; Horsetooth Gulch. 



5. Cerastium beeringianum C. & S. In alpine-arctic regions among rocks 

 from Alb. to Alaska, Colo, and Ariz. Alt. 9000-12,000 ft. Gray's Peak ; Seven 

 Lakes; Upper West Mancos Canon; Mt. Hesperus, at timber line; mountains 

 of Estes Park; Bottomless Pit, near Pike's Peak; West Spanish Peak; head- 

 waters of Clear Creek; southeast of Cameron Pass. 



6. Cerastium pilosum Greene. In alpine places among rocks in Colo. Alt. 

 5000-12,000 ft. Mountains above Ouray; Horsetooth Gulch. 



7. Cerastium oreophilum Greene. In wet places among the mountains from 

 Colo, to Calif. Alt. 5000-12,000 ft. Seven Lakes; foot-hills, Larimer Co.; 

 foot-hills west of Ft. Collins ; Pass Creek ; mountain near Veta Pass. 



8. Cerastium campestre Greene. On hills and mountain-sides from Alb. to 

 Yukon, Wash, and Colo. Alt. 5000-7000 ft. Mt. Abram, Ouray; Pike's Peak; 

 foot-hills north of Ft. Collins; Berthoud Pass; Continental Divide; Muddy 

 Pass; North Park; Soldier Canon; Horsetooth Gulch; Trapper's Lake; Pen- 

 nock's; Como; Dixon Canon; Spring Canon, Howe's Gulch; Coup Divide. 



9. Cerastium scopulorum Greene. In mountains from Colo, to Wyo. and 

 N. M. Alt. 9000-11,000 ft Near La Plata Post Office; Little Kate Basin, La 

 Plata Mountains; vicinity of Como; Robinson; Veta Pass; Cameron Pass; 

 Dixon Canon. 



10. Cerastium occidentale Greene. On dry hills from Mont, to Colo, and 

 Utah. Alt 8000-12,000 ft. Cripple Creek road ; Seven Lakes ; Cameron Pass ; 

 Veta Mountain; Clear Creek Station; Empire; Horsetooth Mountain; Horse- 

 tooth Gulch ; Bear Creek Canon ; Spicer, Larimer Co. ; Rabbit-Ear Range, 

 Routt Co. 



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