PIPER FLORA OF THE STATE OF WASHINGTON. 345 



CERCOCARPTJS. 



1. Cercocarpus ledifolius Nutt; Totr. &Gr. Fl. 1: 427. 1840. Mountain mahogany. ' 



Type locality: Bear River, Idaho. Collected by Nuttall. 



Range : Washington and Wyoming, southward to California and Arizona. 



Specimens examined: Near Salmon River, Horner 298; Blue Mountains, Lake dc HuU,. 

 July, 1892; Piper 2449. 



Zonal distribution : Arid Transition. 



KTTNZIA. 



1. Kunzia tridentata (Pursh) Spreng. Syst. 2: 475. 1825. Antelope brush, 



Purshia tridentata DC. Trans. Linn..Soc. 12: 158. 1817. 



Tigarea tridentata Pursh, Fl.«l: 333. 1814. 



Type locality: "In the prairies of the Rocky Mountains and on the Columbia River. '^ 

 Collected by Lewis. 



Range: Washington to California, New Mexico, and Montana. 



Specimens examined: Wenache, Whited 77, 1064; Ellensburg, Elmer 384; Piper, May, 

 1897; North Yakima, Flett 1037; Pasco, Hir,dshav: 34; Clealum, Henderson, June, 1892; 

 Hunts Junction, Leckenby, April, 1898; Crab and Wilson creeks, Sandberg cf; Leiherg 293; 

 Moses Coulee, Lake <& Hull 497 ; without locality, Vasey in 1889; Wenas, Oriffiths <& Cotton 97. 



Zonal distribution: Upper Sonoran. 



MALACEAE. Apple Family. 



Flowers racemose; carpels fleshy in fruit Amelanchier (p. 345) 



Flowers corymbose. 



Carpels stony in fruit Crataegus (p. 346). 



Carpels papery in fruit Pyrus (p. 347). 



AMELANCHIER. Serviceberry. 

 Twigs pale or ashy. 



Leaves cuneate at base A. A. cuneata. 



Leaves rounded at base 2. A. utahensis. 



Twigs not ashy. 



Leaves tomentose beneath when young, serrate only toward the apex. 1. ^. florida. 

 Leaves glabrous when young. 



Petals 2 cm. long; leaves bright green ^. A. cnsickii. 



Petals 1 to 1.5 cm. long; leaves pallid 5. A. basalticola. 



1. Amelanchier florida Lindl. Bot. Reg. 19: pi. L'^SD. 1833. 



Amelanchier ovalis semiintegrifolia Hook. Fl. Bor. Am. 1 : 202. 1834. 



Type locality: "Northwest America. " Collected by Douglas. 



Range: British Columbia to California. 



Specimens examined: Montesano, Heller 3958; Lopez Island, Lyall in 1858; Fidalgo 

 Island, Flett 1940; Cascade Mountains, latitude 49°, Lyall in 1859; Seattle, Piper, July 4, 

 1897; Olympia, Henderson, May 24, 1892; Rock Island, Henderson, July 3, 1892; Klickitat 

 River, Flett 1325; Ellensburg, Whited 322; without locality, Vasey in 1889; Lake Chelan, 

 Lake & Hull, August 25, 1892; Rock Creek, Piper 2831; Almota, Hull 499; Union Flat, 

 Piper, April 29, 1897; Henderson, July 18, 1892; Pullman, Piper 1534; Clallam County, 

 Elmer 2512; Nisqually Valley, Allen 214; Mount Adams, FleU 1325. 



Zonal distribution: Transition. 



This is by far the most abundant species in Washington and it has commonly been referred 

 to A. alnifolia Nutt. In Cooper's Report it was named A. canadensis var. 



