PIPER FLORA OF THE STATE OF WASHINGTON. 239 



OXYTHECA. 



1. Oxytheca dendroides Nutt. Journ. Acad. Phila. II. 1: 169. 1847. 



Type locality: "On the sand hills of the Rocky Mountains, near Lewis River." Col- 

 lected by Nutall. 



Range : Washington to Wyoming and Nevada. 



Specimens examined: Sunnyside, Piper 2847; Pasco, Elmer 1053; Morgans Ferry, 

 Sulcsdorf 444; Egbert Springs, Sandberg & Leiberg 380; Priest Rapids, Brandegee 1061; 

 junction of Crab and Wilson creeks, Sandberg & Leiberg 302. 



Zonal distribution: Upper Sonoran. 



CHORIZANTHE. 



1. Chorizanthe watsoni Torr. & Gr. Proc. Am. Acad. 8: 199. 1873. 



Type locality: "Nevada, on the borders of the desert, Humboldt, Reese River, and 

 Grass valleys." 



Range: East Washington to Nevada and California. 



Specimens examined: Morgans Ferry, SuJcsdorf 445; Yakima, Leckenby, June, 1898; 

 North Yakima, Henderson 2424; Pasco, Piper 2960; junction of Crab and Wilson creeks, 

 Sandberg <& Leiberg 258; without locality, Brandegee 445; Coulee City, Pijwr 3876. 



Zonal distribution: Upper Sonoran. 



CHENOPODIACEAE. Goosefoot Family. 



Embryo spirally coiled; endosperm scanty or wanting. 



Shrub with monoecious flowers Sarcobatus (p. 239). 



Herbs with perfect flowers. 



Leaves becoming spiny; fruiting calyx surrounded by a 



wing - - Salsola (p. 240). 



Leaves fleshy ; fruiting calyx wingless Dondia (p. 240). 



Embryo annular. 



Endosperm none; stems jointed; leaves scale-like Salicornia (p. 240). 



Endosperm copious; stems not jointed; leaves not scale-like. 

 Pericarp adherent to the seed; fruit much exceeding the 



calyx Corispebmum (p. 241). 



Pericarp not adherent; fruit inclo.sed. 



Flowers unisexual ; fruit inclosed by 2 bractlets. 

 Shrubs; testa membranous. 



Pericarp hairy Eurotia (p. 241). 



Pericarp glabrous Grayia (p. 241). 



Mostly herbs; testa coriaceous Atriplex (p. 241). 



lowers perfect. 



Sepal 1, bract-like; stamen 1 Monolepis (p. 243) . 



Sepals 5, united; stamens 5. 



Flowers capitate; calyx fleshyand red infruit . Blitum (p. 243) . 

 Flowers panicled ; calyx dry or scarcely fleshy 



in fruit Ciienopodium (p. 242). 



SARCOBATUS. 



1. Sarcobatus vermiculatus (Hook.) Torr. in Emory, Rep. 149. 1848. Greasewood. 



Balis'! vermiculatus Hook. Fl. Bor. Am. 2: 128. 1838. 



Type locality: "Common on the barren grounds of the Columbia, and particularly 

 near salt marshes." Collected by Douglas. 



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



