PIPER—FLORA OF THE STATE OF WASHINGTON. 385 
Rance: 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, Sandberg & Leiber 
742; Wenache Mountains, Whited 1335; Skamania County, Suksdorf 2452; Cascade Moun- 
tains, latitude 49°, Lyall in 1859; Columbia Valley, Lyall in 1860; Lake Chelan, Lake & 
Hull 761; Blue Mountains, Horner 428; Olympic Mountains, Elmer 2752; Mount Carlton, 
AKreager 286. 
ZONAL DISTRIBUTION: Canadian and Transition. 
FORSELLESIA. 
1. Forsellesia spinescens (A. Gray) Greene, Erythea 1: 206. 1893. 
Glossopetalon spinescens A. Gray, Pl. Wright. 2: 29. pl. 12. 1853. 
Type Locairy: “In a mountain ravine near Frontera, New Mexico.”’ 
Rance: Washington to California and Texas. 
SPECIMENS EXAMINED: Whitman County, Washington, near Lewiston, Hunter 46. 
ZONAL DISTRIBUTION: Upper Sonoran. 
ACERACEAE. Mapur Faminy. 
ACER. Map te. 
Flowers in racemes; fruit hispid....-..-.-.....-.-----.---.-.-.- 1, A. maerophyllum. 
Flowers in corymbs; fruit glabrous. 
Leaves 3 to 5-lobed; fruit wings somewhat spreading .......... 2. A. doualasii. 
Leaves 7 to 9-lobed; fruit wings widely spreading ............. 3. A. cireinatum. 
1. Acer macrophyllum Pursh, Fl. 1: 267. 1814. OREGON MAPLE. 
Tyre Loca.iry: “On the great rapids [Cascades] of the Columbia River.’’ Collected 
by Lewis. 
Rance: British Columbia to California in the coast region. 
SPECIMENS EXAMINED: Tacoma, Fett 42; Nisqually Valley, Allen 114; Silverton, Bouck 
39; Peshastin, Sandberg & Leiberg 501; Peshastin Canyon, Watson; Lake Chelan, Lake 
& 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. pl. 6. 1847. 
Acer glabrum douglasii Piper, F|. Palouse Reg. 114. 1901. 
Type Locaity: “Near springs of the Rocky Mountains about the sources of the Colum- 
bia.”’ Collected by Douglas. 
Rance: Blue Mountains, Oregon, northeastward into west Montana and northwest- 
ward to British Columbia. 
SPECIMENS EXAMINED: Skagit Pass, Lake d& 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; Bluc 
Mountains, Piper, August, 1892; without locality, Vasey 229, 230; Davis ranch, Kreager 
311; Wenas, Griffiths & Cotton 96. 
ZONAL DISTRIBUTION: Transition and Canadian. 
3. Acer circinatum Pursh, Fl. 1: 267. 1814. VINE MAPLE. 
Type Locauity: “On the great rapids [Cascades] of the Columbia River.’’ Collected 
by Lewis. 
Rance: British Columbia to California in the coast region. 
SPECIMENS EXAMINED: Near Montesano, Heller 3859; Grays Harbor, Lamb 1034a; Ta- 
coma, Fleft 41; upper Nisqually Valley, Allen 115; Silverton, Bouck 38; Yakima Pass, 
29418—06 M 
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