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 5 



mm. long. 

 Flowers nodding in bud ; pod cylindrical ; seeds smooth. 



11. E. 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-clef t. 



Pedicels and pods sparingly glandular, the former long. 15. E. 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 occidental 

 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 Canon ; Parlin, Gunnison 

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

 Park; Ft. Collins; Grizzly Creek; Dark Canon, 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 stramineum 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 



