PIPER FLORA OF THE STATE OF WASHINGTON. 269 



Piper, 'luly, 1896; Pullman, Piper 1467, .Tiino, 1893; without locality, Brandeijee 601; 

 witlioul locality, Vasey in 1889. 



Zonal distribution: Canadian and Hudsonian. 



In Hooker's Flora our species was referred to T. dioiciim L. 



2. Thalictrum venulosuni Treloa.se, Proc. Bost. Soc. Nat. Hist. 23: 302. 1886. 

 Type locality: "British America, Washington Territory, Wyoming, and Colorado." 

 Range: British Columbia to south Dakota, Colorado, and Oregon. 



Specimens examined: Upper Wenas Rivei', Henderson, June, 1892; Rock Lake, Sand- 

 berg d' Leiherfj 113; Loomis, Elwer 599; Pullman, Lake dfc Hull 404; Piper 1467. 

 Zonal distribution: Arid Transition. 



3. Thalictrum purpurascens L. Sp. PI. 1: 546. 1753. 

 Type locality: "Habitat in Canada." 



Range: Saskatchewan to Canada, Florida, Arizona, and Washington. 

 Specimens examined: Box Canyon, Kr eager 377. 



Thalictrum polycarpum Wats. This species appears in Suksdorf's list, but no good 

 evidence exists of its occurrence in Washington. 



TRAUTVETTERIA. 



1. Trautvetteria grandis Nutt.; Torr. & Gr. Fl. 1: 37. 1838. 



Type locality: "Shady woods of the Oregon." Collected by Nuttall. 



Range: British Columbia to Idaho and northern California. 



Specimens examined: Clallam County, £'//A/e/' 2676; ChehalisCounty, Z/am&1198; Moimt 

 Rainiei', Piper, August, 1895; Flett 295; upper Valley Nisqually, Allen 17; Mount Adams, 

 S iiksdorf 49i; Cascade Mountains near Stampede Tunnel, Henderson, July, 1892; Stevens 

 Pass, WJiited 1467; Nason Creek, Sandberg tfc Leiberg 692; Blue Mountains, Piper, July, 

 1896; without locality, Vasey in 1889; Mount Carlton, Kreager 257, 197. 



Zonal distribution: Hudsonian and Canadian. 



MYOSURUS. Mouse tail. 



Carpels prominently beaked; spikes 2 to 6 cm. long 1. M. apetahis. 



Carpels obscurel\' beaked; spikes elongate. 



Spikes very slender, 10 to 50 cm. long; seeds oblong la. M. apetalus lepturus. 



Spikes stouter and shorter; seeds oval. 



Salt-marsh plant, mainly maritime 3. M. major. 



Not of salt marshes 2. M. /lUiu/iiUa. 



1. Myosurus apetalus Gay, Fl. Chil. 1: 31. /)/. /. 1845. 



Myosiirns aristatus Benth; Hook. Lond. Journ. Bot. 6: 4.58 bis. 1847. 



Type locality: "Provincia de Coquimbo." Chile. 



Range: British Columbia to Arizona and California. Chile. New Zealand. 



Specimens examined: West Klickitat County, Sviksdorf492; Ellensburg, Piper, May 20, 

 1897; Pasco, Hindshaw 32; Sprague, Sandberg cfc Leiberg 136; Rockland, Siiksdorf 834; St. 

 Johns, Piper 2796; Almota, Pijier 2789; Pullman, Piper 1355; Waitsburg, Horner 182. 



Zonal distribution: Arid Transition. 



la. Myosurus apetalus lepturus A. Gray, Bull. Torr. Club 13: 2. 1886. 

 Myosurus teneUus Greene, Pittonia 3:. 258.' 1898. 

 Myosurus tenellus amphioxys Greene, loc. cit. 

 Type locality: California. 



Range: British Columbia to Califoma and Utali. 

 Specimens examined: West Klickitat Coun'y, Siiksdoif 2343; Falcon Valley, Suksdorf 



