12S .\i.sixAci:.\r.. 



3. Alsine longifolia (Muhl.) Britt. (Sti-llaria loitgifolia Miihl.) In wet 

 nicailows from Ncwf. to Alaska. Md. and Colo. — Alt. 4000-11,000 ft. — Pike's 

 Peak; Sangre de Cristo Creek; Tennessee Pass; Mancos; Larimer Co.; 

 Andrew's Shetland ranch; Idaho Springs; Iligho; Parlin ; Shecphorn Divide; 

 Gunnison; lola; headwaters of Clear Creek; Graymont; Conejos River, north 

 of Antonito; P.axtcr's ranch; Tabic Rock; Steamboat Springs. 



4. Alsine longipes (Goldie) Coville. (Stcllaria longipcs Goldie) In wet 

 meadows from Lab. to B. C. and Colo. — Alt. 8000-10,000 ft.— Leronx Parks; 

 Caribou. 



In the Rocky Mountain region it is mostly represented by var. stricta 

 (Richardson) Rydb. (Stcllaria stricta Richardson.) It differs from the type 

 in having acute sepals. Its range extends farther southwest to Calif. — Alt. 

 8000-11,000 ft. — West Indian Creek; Moon's ranch. Larimer Co.; Marshall 

 Pass; Dark Cafion; Tennessee Pass; Eldora to Baltimore. 



5. Alsine laeta (Richards.) Rydb. In wet places in the mountain sides from 

 Lab. to B. C, Que. and Nev. — Alt. 9000-12,000 ft.— Little Veta Mountain; 

 West Spanish Peak ; Bob and Chicken Creeks ; Beaver Creek ; Devil's 

 Causeway. 



6. Alsine borealis (Bigel.) Britt. In wet meadows from Lab. to Alaska, 

 N. J. and Calif. — Idaho Springs ; Trapper's Lake. 



7. Alsine crassifolia (Ehrh.) Britton. (Stcllaria crassifolia Ehrh.) 

 Marshes and wet places from Lab. to Alaska, Que. and Colo. — Alt. about 

 10,000 ft. — Como. 



8. Alsine obtusa (Engelm.) Rose. (Stcllaria obtiisa Engelm.) In wet 

 places from Mont, to B. C, Colo., Utah and Wash. — Alt. up to 10,000 ft. — 

 Ruby ; Anthracite Creek. 



9. Alsine calycantha (Bong.) Rydb. (Stcllaria calycantha Bong.) In bogs 

 and wet meadows from Mont, to Alaska, Colo, and Calif.— Alt. 9000-10,500 

 ft. — Bogs, Columbine ; Bob Creek. 



10. Alsine polygonoides Greene. In wet places in Colo. — Alt. about 11.500 

 ft. — Little Kate Basin, La Plata Mountains. 



11. Alsine Jamesiana (Torn) Heller. (Stcllaria Jamcsiana Torr.) In 

 wet woodlands from Wyo. to N. M. and Calif. — Alt. 5000-9000 ft. — Howe's 

 Gulch ; Rist Caiion ; Poverty Ridge ; near Cimarron ; mountains west of 

 Steamboat Springs; Four-Mile Hill, Routt Co.; Mesa Verde; Cucharas River, 

 below La Veta ; Apex ; hills south of Rifle, Garfield Co. ; Mancos ; Platte 

 Caiion ; Rabbit-Ears, Larimer Co. 



2. CERASTIUM L. Mouse-ear Chickweed, Powder-horn. 



Annual "; pods 2-3 times as long as the calyx. 



Pedicels in fruit 1-3 times as long as the calyx, straight or nearly so. 



1. C. brachypoditm. 

 Pedicels in fruit 5 times as long as the calyx or longer, strongly curved above. 



2. C. longipedunculatum. 

 Perennials ; pods 1-2 times as long as the calyx. 



Leaves oblong, ovate or oval, mostly obtuse or acutish. 



Petals I cm. long or more, fully twice as long as the calyx. 



Sepals, at least the outer, oval, obtuse, scarious-margined at the tip as well 



as on the sides. 3. C. pulchelluin. 



Sepals lanceolate, acute, scarious-margined mostly only on the sides. 

 ,• 4. C Ear lei. 



