4 
_ PIPER—FLORA OF THE STATE OF WASHINGTON. 407 
Rance: Washington to Nevada and Utah. 
SPECIMENS EXAMINED: Near Morgans Ferry, Suksdorf’ 310; Crab and Wilson creeks, 
Sandberg & Leiberg 262. 
ZONAL DISTRIBUTION: Upper Sonoran. 
OENOTHERA. EVENING PRIMROSE. 
1. Oenothera biennis muricata (L.) Lindl. Bot. Reg. 19: under pl. 1604. 1833. 
Oenothera muricata Li. Syst. Veg. ed. 12. 263. 1767. 
Tyree Locauity: “Canada.”’ 
Rance: 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. 
Ocenothera biennis canescens Torr. & Gr. Fl. 1: 492. 1840, not Oenothera canescens Torr. & 
Frem. in Frem. Rep. 315. 1845. 
Type Locaity: Pony, Montana. 
Rance: Washington to Montana and Colorado. 
SPECIMENS EXAMINED: Wenache, Waited 1250; North Yakima, Watt, August, 1895; 
Egbert Springs, Sandberg & Leiberg 397; Chelan, Elmer 495; Wilson Creek, Lake & Hull, 
August, 1892; Medical Lake, Henderson, July, 1892; Almota, Piper, September, 1897; 
Wawawai, [orner 673. 
ZONAL bisrripuTion: Arid Transition and Upper Sonoran. 
ANOGRA. 
1. Anogra pallida (Lindl.) Britton, Bull. Torr. Club 28: 175. 1896. 
Ocnothera. pallida Lindl. Bot. Reg. 14: pl. 1142. 1828. 
Type Locauity: “In the Northwest of North America.” “Growing among sand in all 
the dry country west of the Rocky Mountains.” Collected by Douglas. . 
Rance: British Columbia to Mexico. 
SPECIMENS EXAMINED: Wenache, Whited 1110; Klickitat County, Suksdorf 970; White 
Bluff Ferry, Lake & Hull, August, 1892; Pasco, Piper 2992; Hindshaw 43; Glendale, 
Lake & Hull 522; Crab and Wilson creeks, Sandberg & Leiberg 217; Lake Chelan, Howard 
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. G. lasiospermum. 
Seeds glabrous. 
Stems branched at base, very leafy, the shoots erect; capsules 
olong, nearly sessile,.............-.--------------+-------- 4. G. pumilum. 
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. G. ramosissimum. 
1. Gayophytum lasiospermum Greene, Pittonia 2: 164. 1891. 
Tyre Locauity: Near Julian, California. 
Rance: Washington to California and Nevada. 
SPECIMENS EXAMINED: Wenache, Whited 168; Ellensburg, Piper 2634; Mount Adams, 
Henderson 2466; Chelan, Elmer 488; Crab and Wilson creeks, Sandberg & Leiberg 252; 
