PIPER FLORA OF THE STATE OF WASHINGTON. 269 



Piper, July, 1896; Pullman, Piper 1467, June, 1893; without locality, Brandegee 601; 

 without locality, Vasey in 1889. 



Zonal distribution: Canadian and Iludsonian. 



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



2. Thalictrum venulosum Trelease, Proc. Bost. Soc. Nat. Hist. 23: 302. 1886. 

 Type locality: "British America, Washington Territor}^, Wyoming, and Colorado." 

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



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

 berg cfc Leiberg 113; Loomis, Elmer 599; Pullman, LaJce <& 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, Kreager 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. 



S"'ecimens examined: Clallam County, £'imer 2676; ChehalisCounty, Zxim61198; Mount 

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

 Svksdorf 494; Cascade Mountains near Stampede Tunnel, Henderson, July, 1892; Stevens 

 Pass, Whited 1467; Nason Creek, Sandberg & Leiberg 692; Blue Mountains, Piper, July, 

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



Zonal distribution: Hudsonian and Canadian. 



» MYOSTJRTJS. Mouse tail. 



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



Carpels obscurely beaked; spikes elongate. 



Spikes very slender, 10 to 50cm. 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. nammiui. 



1. Myosurus apetalus Gay, P"l. Chil. 1: 31. pi. 1. 1845. 



Myosurus aristatus Benth; Hook. Lond. Journ. Bot. 6: 458 bis. 1847. 



Type locality: "Provincia de Coquimbo." Chile. 



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



Specimens examined: West Klickitat County, Suksdorf 492; Ellonsburg, Piper, May 20, 

 1897; Pasco, Hindshavj 32; Spraguc, Sandberg d; Leiberg 136; Rockland, Suksdorf 834; Sl. 

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



Zonal distribution: Arid Transition. 



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

 Myosurus tenellus Greene, Pittonia 3: 258. 1898. 

 Myosurus tenellus amphioxys Greene, loc. cit. 

 Type locality: California. 



Range: British Columbia to California and Utah. 

 Specimens examined: West Klickitat County, Srtksdorf 2343; Falcon Valley, Suksdorf 



