196 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Flowers erect, each segment bearing a gland at base Zygadenus (p. 197). 



Flowers nodding; perianth segments glandless Stenanthium (p. 197.)- 



Anthers 2-celled; leaves rigid or equitant. 



Leaves equitant; pedicels bracteolate Tofielua (p. 196). 



Leaves not cfjuitant, harsh and rigid; pedicels naked Xerophyllum (p. 197). 



VERATRUM. False hellebore. 



Flowers green ; panicle drooping 1 . V. viride. 



Flowers white; panicle erect. 



Terminal branch of the panicle much elongated 2. V. caudatum. 



Terminal Ijranch of the panicle rather short 3. F. californicvin. 



1. Veratruni viride Ait. Hort. Kew 3: 422. 1789. Gkeen hellebore. 

 Veratrum lohelianum eschscholzianum Roem. & Schult. Sysl-. 7: 1555. 1830. 

 Veratrum eschscholtzii Gray, Ann. Lye. N. Y. 4: 119. 1837. 



Type locality: Morth America. 



Range: Alaska to New Brunswick southward to Washington, Minnesota, and Georgia. 



Specimens examined: Clallam County, M7ner 2501; Cascade Mountains, latitude 49°, 

 Lyall in 1860; Mount Rainier, Piper, August, 1895; Skamania County, Suksdorf 213; 

 Mount Adams, Suksdorf Sb; near Skagit Pass, Lake & Hull 609; Bridge Creek, Elmer 665; 

 Blue Mountains, Piper, July, 1896. 



Zonal distribution: Hudsonian. 



2. Veratrum caudatum Heller, Bull. Torr. Club 26: 588. 1899. 



Type locality: "In wet meadows at Montesano, Chcbalis County, Washington." 

 Collected by Heller. 



Range: Western W'ashington. 



Specimens examined: Montesano, Ilellcr -1013; Seattle, Piper 1101; Chehalis River, 

 Lamb 1236. 



Zonal distribution: Humid Transition. 



This may be merely a form of V. callfornicum Duraiuj, l)ut tiie plant is st)me\vhat diU'erent 

 in habit. 



3. Veratrum calif ornicum Durand, Journ. Acad. Piiila. 3: 103. 1854. 



White hellebore. Plate XX. 



Veratruni speciosum Rydberg, Bull. Torr. Club 27: 531. 1900. 



Type locality: California. Collected by Pratt. 



Range: Washington to California, Colorado, and Montana. 



Specimens examined: Mount Adams, Suksdorf 65; Falcon Valley, Suksdorf 174; 

 North Fork Atanum, Henderson, August 2, 1892; Peshastin, Samlbery <I; Leiherg 518; 

 Wenache, Whited; Palouse, Hevderson, July 15, 1892; Pullman, Piper; without locality, 

 Vasey 99; Mount Carlton, Ereager 263. 



Zonal distribution: Arid Transition. > 



Vcratnun calif ornicum Durand is described as having petioled leaves, but the type 

 L;jjecimen clearly shows that the so-called petiole is only a part of the sheathing base. 



TOFIELDIA. 



1. Tofieldia intermedia Rydberg, Bull. Torr. Club 27: 528. 1900. 



Type locality: "Sheh-Shooh Lake, Alaska." 



Range: Alaska to Oregon and Montana. 



Specimens. examined: Clallam County, Elmer 2504; Olympic Mountams, Piper 2242 

 Cascade Mountains, latitude 49°, Lyall in 1859; Mount Rainier, Piper 2133; Flett 291 

 Tatoosh Mountains, Allen 21 A; Olympia, Kincaid, July 2, 1896; Mount Stuart, Elmer 1227 

 Mount Adams, Suksdorf, August 31, 1886; Falcon Valley, Suksdorf 516; Lake Wenache, 

 Sandherg cfc Leiherg 629; Horseshoe Basin, Lake <& Hull 610; Bridge Creek, Elmer. 



