ALSINACEAE. 129 



Petals less than i cm. long. 



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



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. scopulonim. 



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



1. Cerastium brachypodium (Engelni.) 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 Cafion ; 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 heeringianum 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. — IMountains 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 Cafion ; Spring Caiion, Howe's Gulch ; Coup Divide. 



g. 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 Caiion; Spicer, Larimer Co.; Rabbit-Ear Range, 

 Routt Co. 



9 



