PIPER—-FLORA OF THE STATE OF WASHINGTON. 43 
HYDROCOTYLE. 
1. Hydrocotyle ranunculoides L.f. Suppl. 177. 1781. 
Type Loca.ity: ‘ Mexico.’’ 
Rance: Eastern Pennsylvania to Florida, thence westward to Texas, California, and 
Washington. 
SPECIMENS EXAMINED: Seattle, Piper 639; Tacoma, Flett 225; O’Briens, King County, 
Piper. 
ZONAL DISTRIBUTION: Humid Transition. 
CORNACEAE. Dogwoopv FamiIty. 
Flowers perfect in cymes, either loose or head-like .-.....-...-.-------------- Cornus. 
Flowers dioecious, in spikes .......-.-.---------- 2-2-2 22-2 eee eee ee eee GARRYA. 
CORNUS. 
Flowers in loose cymes, not involucrate; fruit white or blue. 
Cyme branches hairy; leaves loosely pubescent beneath. ......-.- 1. @. occidentalis. 
Cyme branches glabrous; leaves appressed-pubescent beneath... . . 2. C. stolonifera. 
Flowers in head-like cymes, surrounded by a conspicuous involucre; fruit 
red. 
Tree, 10 to 20 m. high; bracts 4 to 8 em. long......-.-.--------- 3. C. nuttallir. 
Herbaceous, 8 to 20 em. high; bracts 1 to 2 em. long... 2.2.2... -- 4. C. canadensis. 
1. Cornus occidentalis (Torr. & Gr.) Coville, Contr. Nat. Herb. 4: 117. 1893. 
Cornus pubescens Nutt. Sylva. 3: 54. 1849. 
Cornus sericea ? occidentalis Torr. & Gr. Fl. 1: 652. 1840. 
Tyre Locauity: “N. W. coast, Douglas, Mr. Tolmie! Dr. Scouler!”’ 
Rance: British Columbia to north California, east to Idaho. 
SPECIMENS EXAMINED: Montesano, Heller 3857; Whidby Island, Gardner 139; Seattle, 
Piper 262, July 10, 1895, July 4, 1897; Silverton, Bouck 91; Cascade Mountains, latitude 
49°, Lyall in 1859; Spokane, Piper 2692; Clarks Springs, A’reager 50, 571; Clallam County, 
Elmer 2699; Valley, Beattie & Chapman 2156. 
ZONAL DISTRIBUTION: Transition. 
Cornus pruMMoNDI! Meyer, as recorded in Cooper’s Report,is doubtless the above 
species. 
2. Cornus stolonifera Michx. Fl. 1: 92. 1803. RED OSIER. 
Type vocauity: “Hab. ad ripas amniumque rivorumque Canadae et Novae Angliae.” 
Rance: New Brunswick to Alaska, south to Virginia, and in the mountains to Califor- 
nia and New Mexico. 
SPECIMENS EXAMINED: Wenache, Whited 205, 1135; Ellensburg, Piper, May 20, 1897; 
Tampico, Henderson, July 31, 1892; Mabton, Cotton 368; west Klickitat County, Suks- 
dorf; Coulee City, Lake & Hull, August 8, 1892; New London, Lamb 1169; Sprague, 
Sandberg & Leiberg 151; Spokane, Henderson, June 12, 1892; Lake Chelan, Lake & Hull, 
August 25, 1892; Walla Walla, Mrs. L. P. Anderson; Pullman, Elmer 840; Piper 2648; 
Wawawai, Piper, June 9, 1894; Lake & Hull 440; Blue Mountains, Piper, August 2, 1896; 
Piper, July 15, 1896; without locality, Vasey in 1889. 
ZONAL DISTRIBUTION: Arid Transition and Upper Sonoran. 
Cornus BAILEYI Coult. & Evans has twice been reported from Washington. In each case 
the specimens are, in our opinion, really C. stolonifera. 
8. Cornus nuttallii Audubon; Torr. & Gr. Fl. 1: 652. 1840. DoGwoop. 
TyPE LocaLitry: Oregon. 
Rance: British Columbia to California, west of the Cascade Mountains, and in north 
Idaho. 
