204 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



4. Sisyrinchiiun idahoense Bicknoll, Bull. Torr. Club 26: 445. 1899. 



Type locality: Kootenai County, Idaho. Collected by Leibei^. 



Range: British Columbia to Idaho and California. 



Specimens exa.mined: Montesano, Heller 3883; Prosser, Henderson 2543; Ellensburg, 

 WhilediSi; Pullman, Pi>r 1684; Hull GOS; Elmer 213, 825; Wenas, Orijfiths (& Cotton 78; 

 Satus, Cotton 1119: Vancouver, Piper 4938. 



Zonal distuibition: Arid Transition. 



This species was formerly considered the same as the eastern i!?. mucronoium Michx., 

 under which name several references to our flora occur. 



6. Sisyrinchiiun segetum Bicknell, Bull. Torr. Club 26: 449. 1899. 



Type ix)cality: Seattle, Wjushinjjton. 



Range: Washington and Oregon west of the Cascade Mountains. 



Specimens examined: Ilumptulips, iMmb 1170; Admiralty Head, Piper, May 27, 1898; 

 Seattle, Pi/xr, May, 1892; Meany liX5; Coupcville, Gardner 283; Tacoma, Flett 187; 

 Olympia, Henderson 2542. 



Zonal distuibi'tion: Humid Transition. 



Very near <S. idahoewte, but perhaps distinct by its narrower and tiiinner leaves and 

 stems. 



HYDASTYLUS. 



Pedicels 10 to 15 mm. long; leaves 2 to 5 mm. broad 1. //. hraclnjpus. 



Pedicels 15 to 20 mm. long; leaves 1 to 3 mm. broad 2. //. horealis. 



Tlie-se two supposed species are very similar and probably not distinct. Heretofore they 

 have l)een referred to Sisijrinc/num colifornicum Ait., a species that does not occur so lar 

 north. More material of these two forms is necessary to determine their status. 



1. Hydastylus brachypus Bicknell, Bull. Torr. Club 27: 379. 1900. 

 Type lckamtv: "Oregon." Collected by E. Hall. 



Range: Coa.sts of Orepon and Washington. 



Specimens examined: Oyhut, iMmb 1251; Westport, Henderson, June, 1892; Gran- 

 ville, Conard 410. 



Zonal dlstribution: Humid Transition. 



2. Hydastylus borealis Bicknell, Bull. Torr. Club 27: 378. 1900. 

 Type ixk'ality: Whatcom County, Washington. Collected by Suksdorf. 

 Range: Coast of Wa.shington and Vancouver Island. 



Specimens examined: Whatcom County, (Pardncr 411; Suksdorf 1004. 

 Zonal distribution: Humid Transition. 



OLSYNIUM. 



1. Olsynium grandiflorum (Dougl.) Raf. New Fl. Am. 1: 72. 1836. 



Sisyrinchium (prandiforum Dougl. Bot. Reg. 16: t. ISG^. 1830. 



Type locality: "Near the Great [Celilo] Falls of the river Columbia." Collected bj' 

 Douglas in 1826. 



Range: British Columbia to California and Nevada. 



Specimens examined: Whidby Island, (?ar(Zn«r 279; between Ellensburg and Wenache, 

 Vi'hited 58; North Yakima, Mrs. Sieimreg in 1894; Klickitat River, Flett 1112; Hangman 

 Creek, Sarulberg cfe Leiberg 34; Pullman, Moore, May, 1893; Flmer 74; Piper, April, 1894, 

 June, 1893; Wenache Mountains, Griffiths cfc Cotton 133; Spokane, Piper. 



