PIPER FLORA OF THE STATE OF WASHINGTON. 385 



Range: British Columbia to California and New Mexico. 



Specimens examined: Near Seattle, Piper, June, 1892; Tacoma, Flett 97; upper Nis- 

 qually Valley, Allen 106; along Twisp River, Whited 201 ; Stevens Pass, Sandherg dc Leiberg 

 742; Wenache Mountains, Whited 1335; Skamania County, Sulcsdorf2452; Cascade Moun- 

 tains, latitude 49°, Lyall in 1859; Columbia Valley, Lyall in 1860; Lake Chelan, Lalce & 

 Hull 761; Blue Mountains, T/orner 428; Olympic Mountains, j^Zmer 2752; Mount Carlton, 

 Kr eager 286. 



Zonal distribution: Canadian and Transition. 



FORSELtiESIA. 



1. Forsellesia spinescens (A. Gray) Greene, Erythea 1: 206. 1893. 

 Olossopetalon spinescens A. Gray, PI. Wright. 2: .29. pi. IS. 1853. 

 Type locality: "In a mountain ravine near Frontera, New Mexico." 

 Range: Washington to California and Texas. 



Specimens examined: Whitman County, Washington, near Lewiston, Hunter 46. 

 Zonal distbibltion: Upper Sonoran. 



ACER ACE AE. Maple Fajhily. 



ACER. Maple. 



Flowers in racemes; fruit hispid 1. ^. macrophyUum. 



Flowers in corymbs; fruit glabrous. 



Leaves 3 to 5-lobed; fruit wings somewhat spreading 2. A. douglasii. 



Leaves 7 f o 9-lobed; fruit wings widely spreading 3.-4. circinatum. 



1. Acer macrophyUum Pursh, Fl. 1: 267. 1814. Oregon maple. 

 Type locality: "On the great rapids [Cascades] of the Columbia River." Collected 



by Lewis. 



Range: British Columbia to California in the coast region. 



Specimens examined: Tacoma, Flett 42; Nisqually Valley, ylZZen 114; Si 1 verton, 5oMct 

 39; Fesh&st'm, Sandberg <& Leiberg 501; Peshastin C&njon, Watson; Lake Chelan, Lake 

 cfe Hull 450; Bingen, Suksdorf 35; without locality, Vasey 225, 226; Clallam County, 

 Elmer 2836; Stehekin, Griffiths & Cotton 219. 



Zonal distribution: Humid Transition. 



2. Acer douglasii Hook. Lond. Journ. Bot. 6: 77. pi. 6. 1847. 

 Acer glabrum douglasii Piper, Pi. Palouse Reg. 114. 1901. 



Type locality: "Near springs of the Rocky Mountains about the sources of the Colum- 

 bia." Collected by Douglas. 



Range: Blue Mountains, Oregon, northeastward into west Montana and northwest- 

 ward to British Columbia. 



Specimens examined: Skagit Pass, Lake & Hull 449; Nisqually Valley, Allen 212; 

 Mount Rainier, Piper 52; Mount Adams, Henderson, July, 1892; Cleman Mountain, 

 Henderson, June, 1892; Wenache Mountains, Whited 1022; Tampico, Flett 1200; Hoods- 

 port, Piper 1017; Fort Colville, Lyall in 1860; Sprague, Sandberg & Leiberg 156; Blue 

 Mountains, Piper, August, 1892; without locality, Vasey 229, 230; Davis ranch, Zreagrer 

 dll; Yf&nm, Griffiths & Cotton^. 



Zonal distribution: Transition and Canadian. 



3. Acer circinatum Pursh, Fl. 1: 267. 1814. Vine maple. 

 Type locality: "On the great rapids [Cascades] of the Columbia River." Collected 



by Lewis. 



Range: British Columbia to California in the coast region. 



Specimens examined: Near Montesano, Heller 3859; Grays Harbor, Lamb 1034a; Ta- 

 coma, Flett 41; upper Nisqually V&\\ey,*Allen 115; Silverton, Bouck 38; Yakima Pass, 

 29418—06 M 25 



