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 Hudsonian. 
In Hooker’s Flora our species was referred to T. dioicum L. 
2. Thalictrum venulosum Trelease, Proc. Bost. Soc. Nat. Hist. 23: 302. 1886. 
Tyre Locauiry: “British America, Washington Territory, Wyoming, and Colorado.” 
Rance: British Columbia to south Dakota, Colorado, and Oregon. 
SPECIMENS EXAMINED: Upper Wenas River, Henderson, June, 1892; Rock Lake, Sand- 
berg & Leiberg 113; Loomis, Elmer 599; Pullman, Lake & Hull 404; Proper 1467. 
ZONAL DISTRIBUTION: Arid Transition. 
3. Thalictrum purpurascens L. Sp. Pl. 1: 546. 1753. 
Tyrer Ltocauiry: “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. 1888. 
Type Loca.ity: “Shady woods of the Oregon.” Collected by Nuttall. 
Rance: British Columbia to Idaho and northern California. 
S>ECIMENS EXAMINED: Clallam County, Elmer 2676; ChehalisCounty, Lamb 1198; Mount 
Rainier, Piper, August, 1895; Flett 295; upper Valley Nisqually, Allen 17; Mount Adams, 
Suksdorf 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, Areager 257, 197. 
ZONAL DISTRIBUTION: Hudsonian and Canadian. 
MYOSURUS. Mouse Tal. 
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. minimus. 
1. Myosurus apetalus Gay, Fl. Chil. 1: 31. pl. 7. 1845. 
M yosurus aristatus Benth; Hook. Lond. Journ. Bot. 6: 458 bis. 1847. 
Tyre Locauity: “Provincia de Coquimbo.” Chile. 
Rance: British Columbia to Arizona and California. Chile. New Zealand. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 492; Ellensburg, Piper, May 20, 
1897; Pasco, Hindshaw 32; Sprague, Sandberg & Leiberg 136; Rockland, Suksdorf 834; St. 
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 138; 2. 1886. 
Myosurus tenellus Greene, Pittonia 3: 258. 1898. 
Myosurus tenellus amphiorys Greene, loc. cit. 
Type Locaciry; California. 
Rance: British Columbia to California and Utah. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 2343; Falcon Valley, Suksdorf 
