PIPER FLORA OF THE STATE OF WASHINGTON. 5()\) 



21. Erigeron canadensis L. Sp. PI. 2: 863. 1753. 

 Type locality: "Canada, Virginia." 



Range: Temperate North America. 



Specimens examined: Mason County, Kincaid in 1892; Nortli Vakima, iro//, August, 

 189.5; Leavenworth, WJdted, August 6, 1896; Lake Chelan, Lah <{• Hull, August 14, 1892; 

 Loomis, Elmer .567; Prosser, Cotton 886. 



Zonal distribution: Transition and Upper Sonoran. 



22. Erigeron acris L. Sp. PL 2: 863. 17.53. 

 Type locality: European. 



Range: British Columbia to Labrador south to Oregon and Colorado. Europe. Asia. 



Specimens examined: Goose Lake, Flett 11.56; Faleon Valley, .S'(//,-.syZ«;/' 3.53; Yakima 

 Region, Brandecjee 878; Cascade Mountains, 49°, Lyall in 1S60; Stevens Pass, Snndhrrg cfc 

 Leiherg 765; Stampede Tunnel, Henderson, .July 26, 1892. 



Zonal distribution: Arid Transition and Canadian. 



22a. Erigeron acris debilis A. Gray, Syn. Fl. 1-': 220. 1884. 



Type locality: "Northern Rocky and Cascade Mountains, Montana, Oanhi/, Snn/enl, 

 at Woodruffs Falls, * * * • Mount Paddo, Sulsdoif, Ilowdl." 



Range: Alaska to Labrador south to Washinglon and Montana. 



Specimens examined: Olympic Mountains, Flett 820; Mount Adams, Siil-sd<»f 70, 402, 

 2170; Howell in 1882; Flett 1156; Hemlerfion, August 9, 1892; Skamania County, .S'^/.sY/or/' 

 2170; Loomis, £'Zmer 591. 



Zonal distribution: Arctic. 



Erigeron glabellus mucronatus Hook. Fl. Ror. Am. 2: 19. 1831. Type Incalit}-, 

 " Plentiful on losv plains of the Columbia, near the coa,st." We have been unnble to deter- 

 mine what this plant is from the lirief description. 



SERICOCARPUS. 



1. Sericocarpus rigidus Lindl. in Hook. PI. Bor. Am. 2 : 14. 18,34. 



Sericocarpus oregonensis Nutt. Trans. Am. Phil. Soc. 7: 302. 1840. 



Ty'pe locality: "Columbia River." Collected by Scouler. 



Range: Washington to California in the coast region. 



Specimens examined: Whidby Island, (^arr/wfr 1.54; Taanua, Flilt 164, 876; Olympia, 

 Henderson 1706; McAllisters Lake, Henderson, July 22, 1888; Fort \'ancouver, Tolrnie. 



Zonal distribution: Humid Transition. 



OREASTRUM. 



1. Oreastrum alpigenum (Torr. & Gr.) Greene, Pittonia 3: 147. 1896. 



Aster alpigenus A. Gray, Proc Am. Acad. 8: ,389. 1872. 



Aplopappus alpigenvs Torr. & Gr. Fl. N. Am 2: 241. 1842. 



Aster pidcJielhis D. C. Eaton in S. Wats. Bot King Explor. 143. t. in. 1871. 



Type locality: Moimt Ramier, Washington Collected by Tolmie. 



Range: Cascade Mountains, Washington and Oregon. 



Specimens examined: Mount Rainier, Allen 143; Piper 498, 21.56; Tolmie: Mount 

 Stuart, Elmer 1094, without locality, Brandegee 18, 20, 32; Mount Adams, Sitksdorf in 

 1878 and .522; Flett 1091. 



Zonal distribution: Arctic. 



EUCEPHALUS. 

 Rays purple or violet. 



Rays white, becoming pink-tinged 1 . E. pavncapitatvs. 



Leaves tomentose beneath - 2. E. Icdophiillns. 



Leaves glabrous. 



Leaves glaucous, broadly lanceolate 3. E. glaucopliylhis. 



Leaves green. 



