PIPER—-FLORA OF THE STATE OF WASHINGTON. . B47 
8. Crataegus brevispina (Dougl.) Heller, Cat. N. A. PL. ed. 2. 98. 1900. 
Crataegus douglasii Lind]. Bot. Reg. 21: pl. 1810. 1835. 
Crataegus punctata brevispina Dougl.; Hook, Fl. Bor. Am. 1: 201. 1838. 
Type Locatiry: “Common on banks of streams on the north-west coast of America.” 
Collected by Douglas and by Scouler. 
Rance: British Columbia to California and Nevada. 
SPECIMENS EXAMINED: Seattle, Piper; Peshastin, Sandberg & Leiberg 544; Wenache, 
Whited 1292, 1070, 89; Ellensburg, Whited 348; Glendale, Lake & Hull 504; without locality 
Vasey in 1889; Spokane, Kreager 534; Puyallup, Piper, May 29, 1902; Pullman, Piper 3827, 
3826. 
ZONAL pistripuTION: Arid Transition. 
The specimens from western Washington are somewhat different from those of eastern 
Washington and possibly distinct. 
Near Pullman and Spokane occurs a form whose fruit is first chestnut-colored, later turn- 
ing black. This blooms a little later than the ordinary form, but has no definite characters 
to distinguish it. 
PYRUS 
Leaves simple; fruit oblong..........------------------+++-+++-+++- 1. P. diversifolia. 
Leaves pinnate; fruit globose. 
Fruit coral-red; leaflets shining, serrate from near the base... ..-- - 2. P. sitchensis. 
Fruit purple, glaucous; leaflets dull, serrate near the apex....----- 3. P. occidentalis. 
1. Pyrus diversifolia Bong. Mem. Acad. St. Petersb. VI. 2: 133, 1882. CRABAPPLE. 
Pyrus rivularis Dougl.; Hook. Fl. Bor. Am. 1: 208. 1834. 
Type Locauity: Sitka. 
Rance: Alaska to California in the coast region. 
SPECIMENS EXAMINED: Clallam County, Elmer 2510; Cascade Mountains, latitude 49°, 
Lyall; Admiralty Head, Piper, May, 1898; Steilacoom, G. C. Woolson; Nisqually Valley, 
Allen 213: Manor, Piper, July 14, 1899; without locality, Vasey in 1889. 
ZONAL DISTRIBUTION: Humid Transition and Canadian. 
2. Pyrus sitchensis (Roem.) Piper, Mazama 2: 107. 1901. MounNTAIN ASH 
Sorbus sitchensis Roem. Syn. Mon. 3: 139. 1847. 
Type Locairy: Sitka. 
Rance: Alaska to California and Idaho. 
SPECIMENS EXAMINED: Lake Cushman, Piper 1989; Twisp River, Whited, July 19, 1896; 
Easton, Whited 424; Mount Rainier, Piper 1990; Bear Prairie, Allen 291; Cascade Moun- 
tains, latitude 49°, Lyall in 1859; Klickitat River, Fett 1341; Nason Creek, Sandberg & 
Leiberg 683; near Lake Chelan, Lake & Hull; Blue Mountains, Piper 2420; Mount Carlton, 
Kreager 265; without locality, Vasey in 1889; Stehekin, Griffiths & Cotton 204. 
ZONAL DISTRIBUTION: Canadian and Hudsonian. ; 
Referred to Pyrus americana DC. in Cooper’s Report. It is also the Sorbus sambuci- 
folius or Pyrus sambucifolius of various reports so far as Washington specimens are con- 
cerned, but it is quite different from the real Pyrus sambucifolius Cham. & Schlecht. 
3. Pyrus occidentalis S. Wats. Proc. Am. Acad. 23: 263. 1888, MounrAIN ASH. 
Sorbus occidentalis Greene, Fl. Fran. 54. 1891. 
Typr Locality: Cascade Mountains, latitude 49°. Collected by Lyall. 
Rance: British Columbia to Oregon in the Cascade Mountains. 
SPECIMENS EXAMINED: Clallam County, Elmer 2509; Cascade Mountains, latitude 49°, 
Lyall in 1859; Baldy Peak, Lamb 1365, 1365a; Mount Rainier, Piper 1988, Flett 277; Goat 
Mountains, Allen 125; Mount Adams, Henderson, August, 1892; mountains, Skamania 
County, Suksdorf, August 13, 1886; near Skagit Pass, Lake & Hull, August, 1892; Stam- 
pede Pass, Henderson, October, 1892; Stevens Pass, Sandberg & Leiberg 750; Bridge Creek, 
Elmer 663; without locality, Vasey in 1889. 
ZONAL DISTRIBUTION: Hudsonian. 
