PIPER FLORA OF THE STATE OF WASHINGTON. 407 



Range: Washington to Nevada and Utah. 



Specimens examined: Near Morgans Ferry, Suksdorf 310; Crab and Wilson creeks, 

 Sandberg cfe Leiberg 262. 



Zonal distribution: Upper Sonoran. 



OENOTHERA. Evening primrose. 



1. Oenothera biennis mnricata (L.) Lindl. Bot. Reg. 19: under pi. 160Jf. 1833. 



Oenothera muricata L. Syst. Veg. ed. 12. 263. 1767. 



Type locality: "Canada." 



Range: British Columbia and Washington; New England to Nova Scotia and Quebec. 



Specimens examined: Whidby Island, Gardner 407; Tacoma, Flett 149; Waitsburg, 

 Horner 181; Meyers Falls, Beattie & Chapman 199. 



Zonal distribution: Transition. 



la. Oenothera biennis strigosa (Rydberg). 



Onagra strigosa Rydberg, Mem. N. Y. Bot.Gard. 1: 278. 1900. 



Oenothera biennis canescens Torr. & Gr. Fl. 1 : 492. 1840, not Oenothera canescens Torr. & 

 Frem. in Frem. Rep. 315. 1845. 



Type locality: Pony, Montana. 



Range: Washington to Montana and Colorado. 



Specimens examined: Wenache, Whited 1250; North Yakima, Watt, August, 1895; 

 Egbert Springs, Sandberg cfe Leiberg 397; Chelan, Elmer 495; Wilson Creek, LaTce c& Hull, 

 August, 1892; Medical Lake, Henderson, July, 1892; Almota, Piper, September, 1897; 

 Wawawai, Horner 673. 



Zonal distribution: Arid Transition and Upper Sonoran. 



ANOGRA. 



1. Anogra paUida (Lindl.) Britton, Bull. Torr. Club 23: 175. 1896. 



Oenothera pallida Lindl. Bot. Reg. 14: pi. 1142. 1828. 



Type locality: "In the Northwest of North America." "Growing among sand in all 

 the dry country west of the Rocky Mountains." Collected by Douglas. 



Range: British Columbia to Mexico. 



Specimens examined: Wenache, Whited 1110; Klickitat County, Suksdorf 970 ; White 

 Bluff Ferry, Lake cfe Hull, August, 1892; Pasco, Piper 2992; Hindshaw 43; Glendale, 

 Lake <& Hull 522; Crab and Wilson creeks, Sandberg cfc Leiberg 217; Lake Chelan, Ho)rard 

 in 1899; Columbia River, latitude 46° to 49°, Lyall in 1860; without locality, Vasey 537; 

 Kiona, Piper, July, 1897; Steamboat Rock, McKay 20. 



Zonal distribution: Upper Sonoran. 



GAYOPHYTUM. 



Seeds canescent with appressed hairs 1.6^. lasiospermum. 



Seeds glabrous. 



Stems branched at base, very leafy, the shoots erect; capsules 



olong, nearly sessile, 4. G. pumilutn. 



Stems usually much-branched above, remotely leafy; capsules on 

 elongated pedicels. 



Flowers large, 6 to 12 mm. broad 2. G. diffusum. 



Flowers small, 2 to 4 mm. broad 3. 6^. ramosissimum. 



1. Gayophytum lasiospermuni Greene, Pittonia 2: 164. 1891. 



Type locality: Near Julian, California. 



Range: Washington to California and Nevada. 



Specimens examined: Wenache, Whited 168; Ellcnsburg, Piper 2634; Mount Adams, 

 Henderson 2466; Chelan, Elmer 488; Crab and Wilson creeks, Sandberg tfc Leiberg 252; 



