242 EPILOBIACEAE. 



Petals white ; plant 1-3 dm. high, stoloniferous. 9. E. alpinum. 



Petals purple or pink. 

 Plant 1-3 dm. high, soboliferous ; flowers 5-7 mm. long. 



10. E. Hornemannii. 

 Plant usually less than i dm. high, stoloniferous ; flowers less than s 



mm. long. 

 Flowers nodding in bud ; pod cylindrical ; seeds smooth. 



11. £. anagallifolium. 

 Flowers ascending in bud ; pod somewhat clavate ; seeds papillose. 



12. E. clavatum. 

 Leaves narrowly linear, entire ; innovations of long subterranean shoots, 



bearing at their ends ovoid turions ; petals white ; capsule cinereous. 

 Leaves and lower part of the stem glabrous. 13. E. wyomingense. 



Leaves and stem crisp-pubescent. 14. E. linear e. 



Annuals with more or less sheddy, straw-colored bark ; stigma 4-cleft. 



Pedicels and pods sparingly glandular, the former long. 15. B. paniculatum. 

 Whole inflorescence densely glandular ; pedicels very short, scarcely exceeding 

 the bracts. 16. E. adenocladon. 



1. Epilobium Palmeri Rydb. In wet places from Mont, and Ida. to Utah 

 and Colo. — Tobe Miller's ranch. 



2. Epilobium ovatifolium Rydb. In wet ground in Colo, and Utah. — Alt. 

 8000-13,000 ft. — Lake City ; head of Bard Creek ; mountains above Ouray ; Bob 

 Creek, west of Mt. Hesperus; headwaters of Sangre de Cristo Creek; near 

 Pagosa Peak; Red Mountain, south of Ouray; Ironton Park, 9 miles south 

 of Ouray; Columbine; west of Ouray; Grayback mining camps and Placer 

 Gulch. 



3. Epilobium brevistylum Haussk. Along streams from Mont, and Wash, 

 to Colo, and Calif. — Alt. 8000-9000 ft. — Veta Pass; headwaters of Pass Creek; 

 near Pagosa Peak; north of Steamboat Springs. 



4. Epilobium occidentale (Trelease) Rydb. {E. adenocaulon occidentale 

 Trelease) In wet ground from Mont, and Alb. to S. D. and Colo. — Alt. 

 5000-10,000 ft. — Caribou; Boulder; Van Boxle's ranch above Cimarron. 



5. Epilobium adenocaulon Haussk. {E. coloratum Torr. ; not Muhl.) In 

 swamps and wet meadows from N. B. and Wash, to Pa., Colo, and Nev. — 

 Alt. 4000-10,000 ft. — Cheyenne Mountain; near Empire; Pagosa Springs; 

 Mountain View; Engelmann Canon; William's Caiion; Parlin, Gunnison 

 Co. ; North Cheyenne Canon ; Spring Caiion ; foot-hills, Larimer Co. ; South 

 Park; Ft. Collins; Grizzly Creek; Dark Cation, Pike's Peak; Durango; 

 South Park; Boulder. 



6. Epilobium rubescens Rydb. In wet places of Colo. — Alt. up to 9000 ft. — 

 Pagosa Springs; Middle Park; Engelmann Canon. 



7. Epilobium sttamineum Rydb. In wet places of Colo, and Wyo. — Alt. 

 8000-11,000 ft. — Sangre de Cristo Creek; Chicken Creek, West La Plata 

 Mountains; Bob Creek, west of Mt. Hesperus; Idaho Springs; near Pagosa 

 Peak; Ruxton. 



8. Epilobium Drummondii Haussk. Along brooks from Sask. and Wash. 

 to S. D. and Colo. — Alt. 8000-9000 ft. — Headwaters of Clear Creek; South 

 Park; Van Boxle's ranch, above Cimarron; Sargent's; headwaters of Sangre 

 de Cristo Creek ; Walton Creek, Routt Co. ; summit of North Park Range, 

 Larimer Co. 



9. Epilobium alpinum L. On mountain sides in wet places from Greenl. 

 and Alaska to N. H., Colo, and Calif. — Alt. 9000-11,000 ft. — Head of Bard 



