PIPER FLORA OF THE STATE OF WASHINGTON, 241 



The Pacific Coast plant, judging from a small amount of herbarium material, is somewhat 

 different from the typical ambigua of the Atlantic slope. Our plant was called S. herbacea 

 L. in Cooper's Report and S. radicans L. in Hooker's Flora. 



CORISPERMUM. 



Akenes 3 to 5 mm. long, winged 2. C. hyssopifolium. 



Akenes 2 to 2.5 mm. long, wingless 1. C. villosum. 



1. Corispermum villosum Rydberg, Bull. Torr. Club 24: 191. 1897. 

 Type locality: Manhattan, Montana. 



Range: Washington, Montana, Nevada. 

 Specimens examined: Sunnyside, Cotton 753. 

 Zonal distribution: Upper Sonoran. 



2. Corispermum hyssopifolium L. Sp. PI. 1:4. 1753. Bugseed. 

 Type locality: "Habitat ad Volgam Tartariae, Gillan Borussiae, Monspelii arenosis." 

 Range: British Columbia and Saskatchewan, south to Arizona and Texas. 

 Specimens examined: junction of Crab and Wilson creeks, Sandberg & Leiberg 309; west 



Klickitat County, Suksdorf 1385; Wawawai, Piper 1770; Rattlesnake Mountains, Cotton 

 885; Sunnyside, Cotton 754. 

 Zonal distribution : Upper Sonoran. 



EXJROTIA. 



1. Eurotia lanata (Pursh) Moq. Chenop. Mon. Enum. 81. 1840. Winter fat. 



Diotis lanata Pursh, Fl. 2: 602. 1814. 



Type locality: "On the banks of the Missouri in open prairies." Collected by Lewis. 



Range: Washington to Saskatchewan, south to California and New Mexico. 



Specimens examined: Egbert Springs, Sandberg (& Leiberg 347; Sunnyside, Pi/jer 2846; 

 Rattlesnake Mountains, Dunn, September 10, 1902; Sunnyside, Cotton 752. 



Zonal distribution : Upper Sonoran. 



GRAYIA. 



1. Grayia spinosa (Hook.) Moq. in DC. Prod. IS^: 119. 1849. ' Hop sage. 



Chenopodium? spinosum Hook. Fl. Bor. Am. 2: 127. 1838. 



Grayia polygaloides Hook. & Am. Bot. Beech. Voy. 388. 1841. 



Eremosemium spinosum Greene, Pittonia 4: 225. 1901. 



Type locality: "Interior of North California. Douglas, 1826." 



Range: Washington to Wyoming, Utah, and California. 



Specimens examined: Coulee City, Piper 3896; Crab and Wilson creeks, Sandberg cfc 

 Leiberg 226; North Yakima, Flett 1028; Mrs. Steinweg in 1894; Leckenby, May 9, 1898; 

 Pasco, Piper 2974; Hindshaw 40; Morgans Ferry, Suksdorf 447 ; Snipes Mountains, Cotton 

 389; Prosser, Griffiths cfc Cotton 16. 



Zonal distribution : Upper Sonoran. 



ATRIPLEX. 



Perennial, shrubby; leaves oblong, entire 5. ^. nuttallii. 



Annuals. 



Leaves densely scurfy and silvery 4. A. argentea. 



Leaves fleshy and mealy, not silvery. 



Flowers in axillary clusters; leaves linear 3. ^. zosteraefolia. 



Flowers in terminal panicles. 



Leaves ovate-triangular, usually dentate \. A. hastata. 



Leaves lanceolate, mostly entire 2. A. patvla. 



1. Atriplex hastata L. Sp. PI. 2: 1053. 1753. 

 Type locality: "Habitat in Europa frigidiori." 

 29418—06 M 16 



