330 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 1992; Elmer 2531; Cascade Moun- 
tains, latitude 49°, Lyall in 1859; Silverton, Bouck 51; Mount Rainier, Allen 122; Piper 
2041; Mount Adams, Henderson, August, 1892; Suksdorf, September, 1877; Skagit Pass, 
Lake & Hull 491; between Cascade Mountains and Colville, Lyall in 1860; Nason Creek, 
Sandberg & Leiberg 655; Bridge Creek, Elmer 639; without locality, Vasey in 1889. 
ZONAL DISTRIBUTION: Arctic. 
SCHIZONOTUS. 
1. Schizonotus discolor (Pursh) Raf. New FI. 3: 75. 1836. OCEAN SPRAY. 
Holddiseus discolor Maxim. Act. Hort. Petrop. 6: 254. 1879. 
Spiraea discolor Pursh, Fl. 1: 342. 1814. 
Spiraea ariaefolia Smith, Rees Cycl. 33: no. 16. 1816, 
Type Locauiry: “On the banks of the Kooskoosky.’’ Collected by Lewis. 
Rance: British Columbia to Idaho and California. 
SPECIMENS EXAMINED: Clallam County, Elmer 2522; Cascade Mountains, latitude 49°, 
Lyall in 1859; Seattle, Piper 64; Port Ludlow, Binns; near Satsop, Heller 4025; 
upper Nisqually Valley, Allen 2; Atanum Soda Springs, Watt, August, 1895; Skagit Pass, 
Lake & Hull, August, 1892; Fort Vancouver, Tolmie; Peshastin, Sandberg & Leiberg 478; 
Wenache, Whited 1176; Ellensburg, Whited 543; Cowiche Creek, Cotton 466; Horseshoe 
Basin, Elmer 708; without locality, Vasey in 1889; Tukanon River, Lake & Hull 512; Loon 
Lake, Winston, July 20, 1897; Clarks Springs, Areager 78; Mount Carlton, Areager 261. 
ZONAL DISTRIBUTION: Transition, rarely Upper Sonoran. 
SPIRAEA. 
Low depressed shrubs with entire leaves. 
Calyx lobes acute; leaves canescent............-.............-.. 1. S. cinerascens. 
Calyx lobes obtuse; leaves glabrous ....... 2.2.22 2.0.0222-0222--- 2. 8. hendersonii. 
Taller shrubs with serrate or incised leaves. 
Inflorescence pyramidal. 
Leaves tomentose beneath; flowers red...........-.-.-.----- 3. 8S. douglasii. 
Leaves glabrous beneath. 
Flowers red_.......--- 22-22-2222 22-2 eee ee eee ee eee 4. S. menziesii. 
Flowers white...............-.-...-.-.------.-.---.-.. oS. pyramidata. 
Inflorescence flat-topped. 
Flowers red, crowded..........-.---.-.2--- 2-220-222-2202 6. S. densiflora. 
Flowers white, looser..........2.2..2-2..---.-.----- beeen 7. S. corymbosa. 
1. Spiraea cinerascens Piper, Erythea 7: 171. 1899. 
Type Locauiry: “On bluffs of the Columbia River, Wash., 12 miles south of Chelan, in 
erevices of basaltic rock.’” Collected by Elmer. 
RanGE: Known only from the type collection. 
SPECIMENS EXAMINED: Okanogan County, Hlmer 910. 
2. Spiraea hendersoni (Canby) Piper, Erythea 7: 171, 172. 1899. 
Lutkea hendersoni Greene, Pittonia 2: 219. 1892. 
Eriogynia hendersoni Canby, Bot. Gaz. 16: 236. 1891. 
Type LocaLiry: Mount Steele, Olympic Mountains, Washington. 
Rance: Olympic Mountains. 
SPECIMENS EXAMINED: Olympic Mountains, Piper 910, 1991; Elmer 2517; Henderson 
1874; Baldy Peak, Lamb 1374; Mount Storm King, Lawrence 344. 
ZONAL DISTRIBUTION: Hudsonian. 
3. Spiraea douglasii Hook. Fl. Bor. Am. 1: 172. 1830. 
Type Loca.ity: ‘North West coast of America about the Columbia and the Straits of 
De Fuca.”’ Collected by Douglas and by Scouler. 
Rance: British Columbia to Oregon in the coast region. 
