GEOLOGICAL SUEVEY OF THE TERRITORIES. 779 



ASCLEPIADACE^. 



Asclepias speciosa, Torr. — Port jSTeuf Caiion, Idaho, July; Snake River 

 Valley. 



Ac^rates decumhens, Decaisne. — Hot springs ten miles from Ogdeu, 

 Utah, June. 



NYCTAGrmACE^. 



Ahronia fmgrans, Nutt. — Foot-liills near Ogden, Utah, June. Two or 

 three species of Ahronia were collected but unfortunately lost. 



CHENOPODIACEJE. 



Ghenopodium album, L. — Port Neuf Canon, Idaho, July; Twin Buttes 

 on Henry's Fork of Snake River. Common everywhere on the route. 



Ghen&podium album, L., var. leptophyllum, Moq. — Snake River Valley, 

 July. 



CJienapodmm album, L., var. " Near the var. integrifolium, Ledeb." 

 Professor Porter. — Yellowstone Lake, August. 



Ghenopodium Jiybridum, L, — Henry's Fork of Snake River, July; Yel- 

 lowstone Lake, August. 



BUtum capitatum, L. — Henry's Fork of Snake River, August; Teton 

 Basin, July. 



BUtum polymorplmm, C. E. Meyer, var. hu^nile, Moq.-^Near Great Salt 

 Lake, Utah, June. 



Monolepis clienopodioides, Moq. {BUtum NuttalUanum, R. and S.) — Teton 

 Basin, July. 



Obione canescens^Moq. — Great Salt Lake, Utah, June; Blackfoot River, 

 Idaho, July ; Port iSTeuf Caiion ; Marsh Valley. 



Obione confertifoUa, Torr. — Great Salt Lake, Utah, June. 



Obione argenfea, Moq. — Great Salt Lake, Utah, June; Snake River 

 Valley, July. 



Grayia polygaloides, Hook, and Arn. — Snake River Plains, July. 



Eurotia lanata, Moq. — Xear Great Salt Lake, Utah, June; Snake 

 River Plains, July. "Known as 'white sage' and ' winter fat.' Is 

 valuable for fattening stock." Watson. 



Kochia prostrata, Shrad. — I^fear Fort Bridger, Wyoming, August. Dr. 

 Joseph Leidy. 



SaUcorma^ierbacea, L. — Great Salt Lake, Utah, June ; Lower Fire-Hole 

 Basin, August. 



Halostachys occidentalis, S. Watson, (Clarence King's Rep., vol. v, p. 

 293.) — 'Sear Great Salt. Lake, June. 



Sarcobatus vermiculatus, Torr. [Fremontia vennicularis, Torr, Frem. 

 Rep.) — Black Buttes, Utah, June. Known as " grease-wood." 



AMARANTACE^. 



Amarantus albus, L. — Snake River Valley, July. " Remarkably red 

 for the species." Professor Porter. 



POLYGONACE.^. 



Eriogonum heracleoides, Nutt. — Near Ogden, Utah, June; along the 

 Yellowstone, elevation 6,200 feet, August ; Snake River Valley, July. 

 Eriogonum umhellatum, Torr. — Near Ogden, Utah, June. 



