MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 275 



Like the last but more glaucous and with larger flowers. 



Montana: Bozeman, 1895, Rydbcrg^ 2^2^; Manhattan, ^7^6"; 

 Great Falls, 1891, R. S. Williams, 28g. 

 Epilobium adenocaulon Hausskn. .Oester. Bot. Zeitschr. 29: 119 



[Trelease, Mon. 94 ; 111. Fl. 2 : 484] ; Efilohium colorafuiny\^?iis. 



Bot. Cal. I : 218 [Man. R. M. 102] ; not Muhl. 



The eastern B. colorafum has lanceolate strongly serrate leaves 

 with a distinct petiole and beakless seeds with a cinnamon-colored 

 coma (when ripe) . In E. adenocaulon the leaves are more ovate, the 

 petiole short and winged, the coma white and the seeds short-beaked. 

 It is common in swampy ground, up to an altitude of 2500 m. 



Montana: Manhattan, 1895, Rydberg, 2730; Cliff Lake, July 

 26, 1897, Rydbe)-g & Bessey, ^555 and 4556; Cottonwood Canon, 

 1892, W. T. SJiaiv; Meadow Creek, 1886, Tzceedy, lo^g; Ulm, 

 1887, R. S. Williams, 736; Alhambra, 1892, B. D. Kclscy. 



* Epilobium adenocaulon perplexans Trelease, Ann. Rep. Mo. Bot. 



Gard. 2 : 96. 



Slender, subsimple, the leaves more lanceolate, mostly obtuse and 

 only slightly serrulate. 



Montana: Spanish Basin, 1895, Blodman, 662; Elk Mts., 66j ; 

 Bridger Mts., 664; Bozeman, 1895, Rydbcrg, 2732; Granite, 1892, 

 Kelsey. 



* Epilobium occidentale (Trelease); Efilobium adenocaulon occi- 



«'(?;;/a/t- Trelease, Ann. Rep. Mo. Bot. Gard. 2: 95. 



Like E. adenocaulon, but more strict and with very glandular 

 branches, the triangular-lanceolate leaves strongly but distantly 

 denticulate. 



Montana: Bozeman, 1895, Rydberg, 2731; Spanish Basin, 

 1896, Blodman, 660; Jack Creek, July 15, 1897, Rydberg & Bes- 

 s^y^ 4549 '^nd 4354. 



* Epilobium glandulosum Lehm. Pug. 2: 14 [Trelease, Mon. 99]. 



Somewhat resembling E. adenocaulon, but the leaves broader and 

 more crowded ; stem loosely crisp-pubescent above with flexuous 

 glandular hairs and producing (as in the four following species) 

 subterranean fleshy winter bulblets. In swampy grounds, at an alti- 

 tude of about 2000 m. 



Montana : Spanish Basin, July i, 1897, Rydberg & Bessey, 4537. 



* Epilobium delicatum Trelease, Ann. Rep. Mo. Bot. Gard. 2: 99. 



Stem slender, glabrous, except the crisp-hairy lines above and the 



