220 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Specimens examined: Clallam County, Elmer 2759; Hoquiam, Lamh 1022; Olynipia, 

 Henderson, August 23, 1892; upper Valley Nisqually, Allen 211; west Klickitat County, 

 Svlcsdoif 2184. 



Zonal distribution: Humid Transition. 



For illustration see Plate VIII, facing page 41. 



4. Alnus tenuifolia Nutt. Sylva 1: 32. 1842. 



Alnu.s hicana rirescens Wats. Bot. Cal. 2: 81. 1880. 



Alnus occidenUilis Dippel, Handb. Laubh. 2: 158. 1892. 



Type locality: "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." 



Range: British Columbia to California and New Mexico. 



Specimens examined: Peshastin Creek, Watson 363, October 16, 1880; Peshastin, Sand- 

 berg & Leiberg 543; Falcon Valley, Suhsdorf 2193, 2183; Ellensburg, Whited 256; Elmer 

 413, July, 1897; Wenache, Whited 52, 1002; Atanum River, FlettA35l; Pleasant Valley, 

 La]ce<&'Hvll,Augvisf2, 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. Beech Family. 



Involucre 1-flowered, becoming a scaly cup. '. - - Quercus. 



Involucre 1 to 3-flowered, becoming a prickly l)ur Castanopsis. 



QUERCUS. Oak. 



1. Quercus garryana Dough; 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. pi. 37. 1889. 



Type locality: "Plentiful on plains near Ft. Vancouver, on the ^Multnomah, and at 

 Puget Sound." 



Range: Vancouver Island to California in the coast region. 



Specimens examined: Swauk, Watson 365; White Salmon, SuTcsdorf 308; Tampico, 

 Flett; near Mount Adams, 6'o«OH 1495: Seattle, Pi/??/',- Steilacoom, P;/)e/'; Fairhaven. Piper 

 in 1892: Bingen, Piper 6453, 6454. 



Zonal distribution: Transition. 



Professor Greene considers the Washington-British Columbia form as a dift'erent 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 IX, facing page 42. 



CASTANOPSIS. 



1. Castanopsis clirysophylla (Dougl.) A. DC. in Seem. Journ. Bot. 1: 182. 1863. 



Castanea chrysophylla Dougl.; Hook. Fl. Bor. Am. 2: 159. 1839. 



Type locality: "On the Grand Rapids of the Columbia." Collected by Douglas. 



Range: Washington to middle California. 



Specimens examined: Mofl'att's Springs, Skamania County, Gorman, May 15, UX)4, the 

 only known station north of the Columbia River. 



