220 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
SPECIMENS EXAMINED: Clallam County, Elmer 2759; Hoquiam, Lamb 1022; Olympia, 
Henderson, August 23, 1892; upper Valley Nisqually, Allen 211; west Klickitat County, 
Suksdorf 2184. 
ZONAL DISTRIBUTION: Humid Transition. 
For illustration see Plate VITI, facing page 41. 
4. Alnus tenuifolia Nutt. Sylva 1: 32. 1842. 
Alnus incana virescens Wats. Bot. Cal. 2: 81. 1880. 
Alnus occidentalis Dippel, Handb. Laubh. 2: 158. 1892. 
Type Locauiry: “On the borders of small streams within the range of the Rocky Moun- 
tains, and afterwards in the vallies of the Blue Mountains of Oregon.” 
Rance: British Columbia to California and New Mexico. 
SPECIMENS EXAMINED: Peshastin Creek, Watson 363, October 16, 1880; Peshastin, Sand- 
berg & Leiberg 543; Falcon Valley, Suksdorf 2193, 2183; Ellensburg, Whited 256; Elmer 
413, July, 1897; Wenache, Whited 52, 1002; Atanum River, Flett 1351; Pleasant Valley, 
Lake & Hull, August 2, 1892; Spokane, Piper, July 2, 1896, September 3, 1896; Blue 
Mountains, Piper, July 16, 1896; Pullman, Piper, August, 1896, January, 1896; Mount 
Carlton, Kreager 226. 
ZONAL DISTRIBUTION: Arid Transition. 
FAGACEAE. Berecu Famity. 
Involucre 1-flowered, becoming a scaly cup... ... ~~ - Lee ee ee eee eee ee eee QUERCUS. 
Involucre 1 to 3-flowered, becoming a prickly bur...... 2.222.222.2222... CASTANOPSIS. 
QUERCUS. Oak. 
1. Quercus garryana Dougl.; Hook. Fl. Bor. Am. 2: 159. 1839. 
Quercus jacobi R. Br. Campst. Ann. & Mag. Nat. Hist. IV. 7: 255. 1871. 
Quercus gilberti Greene, West Coast Oaks 77. pl. 37. 1889. 
Type vocauiry: “Plentiful on plains near Ft. Vancouver, on the Multnomah, and at 
Puget Sound.”’ 
Rance: Vancouver Island to California in the coast region. 
SPECIMENS EXAMINED: Swauk, Watson 365; White Salmon, Suksdorf 308; Tampico, 
Flett; near Mount Adams, Cotton 1495; Seattle, Piper; Steilacoom, Piper; Fairhaven, Piper 
in 1892; Bingen, Piper 6458, 6454. 
ZONAL DISTRIBUTION: Transition. 
Professor Greene considers the Washington-British Columbia form as a different species 
from that of California, but if this is so, it is the California plant that should have its name 
altered, as all the above names belong to the northern plant. Quercus gilberti is the low, 
often prostrate, oak occurring about the Gulf of Georgia and locally known as vine oak. It 
is remarkably variable in foliage, but no fruiting specimens have been found. In sheltered 
places it assumes the ordinary form of Q. garryana. 
For an illustration of this species see Plate TX, facing page 42. 
CASTANOPSIS. 
1. Castanopsis chrysophylla (Dougl.) A. DC. in Seem. Journ. Bot. 1: 182. 1863. 
Castanea chrysophylla Dougl.; Hook. Fl. Bor. Am. 2: 159. 1839. 
Type Locaxity: “On the Grand Rapids of the Columbia.’”’ Collected by Douglas. 
Rance: Washington to middle California. ; 
SPECIMENS EXAMINED: Mofflatt’s Springs, Skamania County, Gorman, May 15, 1904, the 
only known station north of the Columbia River. 
