PRIMULACEAE. 263 



7. Androsace subulifera (A. Gray) Rydb. (A. septentrionalis subulifera A. 

 Gray) In the mountains from Mont, to Colo. — Alt. 6000-10,000 ft. — Cascade; 

 Minnehaha; Cameron Pass; Steamboat Springs; Cimarron; Beaver Creek; 

 Mancos ; Durango ; Pennock's ; Dillon Canon, Trinidad. 



8. Androsace filiformis Retz. {A. capillar is Greene) Along mountain 

 streams from Wash, and Mont, to Colo. — Alt. up to 10,000 ft. — Gore Pass; 

 Middle Park; Grand River, 12 miles below the lake; Steamboat Springs. 



3. STEIRONEMA Raf. Fringed Loosestrife. 



I. Steironema ciliatum (L.) Raf. In swamps and wet meadows from N. 

 S. and Wash, to Ga. and Ariz. — Alt. 4000-8000 ft. — New Windsor, Weld Co.; 

 Alamosa; Wahatoya Creek; Ft. Collins; Mason's river-front farm; Rist 

 Canon ; Horsetooth Gulch ; La Porte ; Boulder. 



4. NAUMBURGIA Moench. Tufted Loosestrife. 



I. Naumburgia thyrsiflora (L.) Duby. In shallow water and swamps 

 from N. S. and Alaska to Pa., Colo, and Ore. ; also in Europe. — Alt. about 

 5000 ft. — Ft. Collins. 



5. DODECATHEON L. American Cowslip, Shooting Star. 



Anthers subsessile or nearly so ; tube of the filaments, if any, less than 0.5 mm. long. 



I. D. multiflorum. 

 Anthers not subsessile ; filaments united into a distinct tube, 1-3 mm. long. 

 Anthers more than twice as long as the short filaments. 

 Leaves entire. 



Leaf-blades oval or oblong; bracts oblong, mostly obtuse; plant slender; 



flowers 1-3 (rarely 4-5). 2. D. philoscia. 



Leaf-blades oblanceolate ; bracts lanceolate, acute ; plant usually stout 

 and many-flowered. 3. D. radicatum. 



Leaves sinuately dentate. 4. D. sinuatum. 



Anthers less than twice as long as the filaments. 5. D. pauciflorum. 



1. Dodecatheon multiflorum Rydb. In wet meadows of Colo, and Wyo. — 

 Alt. 8000-9000 ft.— Sangre de Cristo Creek. 



2. Dodecatheon philoscia A. Nels. In wet meadows of Colo, and Wyo. — 

 Alt. 8000-10,000 ft. — William's Caiion, near Pike's Peak; Walton Creek; 

 Sargent's; Pike's Peak; Ft. Collins. 



3. Dodecatheon radicatum Greene. In wet meadows from S. D. and Wyo. 

 to Kans. and N. Mex. — Alt. 7000-11,000 ft. — Eldora to Baltimore; Berthoud 

 Pass; Dark Cafion; Bear Creek Canon; Grayback mining camps and Placer 

 Gulch ; Walden ; below Colorado Springs ; Idaho Springs ; West Indian 

 Creek; Veta Mountain; South Park; East Indian Creek; Lake City; Horse- 

 tooth Gulch ; forks of Poudre and Big South ; gulch west of Dixon Cafion ; 

 Pennock's mountain ranch ; Hematite ; Pike's Peak. 



4. Dodecatheon sinuatum Rydb. (D. radicatum sinuatum Rydb.) Shady 

 wet banks and wet meadows in Colo. — Alt. 5000-8000 ft. — Foot-hills, Larimer 

 Co. ; Buena Vista ; foothills west of Ft. Collins. 



5. Dodecatheon pauciflorum (Durand) Greene. In wet meadows and along 

 streams from Mackenzie and Sask. to Colo. — Alt. about 8500 ft. — Columbine. 



