90 Muhlenbergia, Volume 6 



plants growing abundantly, as Allenrolfia occidentalism Salicomia 

 herbacea, Disticlilis spicata and Sesuvinm sessile. 



There are many large clay flats interspersed throughout the 

 lower areas which are absolutely barren of all vegetation. These 

 increase in extent towards the Carson sink region, where there 

 are hundreds of acres devoid of plant growth. The character of 

 these lands is well described in Bulletin 157 of the Bureau of 

 Plant Industry of the United States Department of Agriculture. 

 Where the sand has blown up in small hummocks from higher 

 areas, we will find a few scattered plants of greasewood on these 

 barren flats. 



Atriplex confertifolia is another common plant in the region 

 found on a variety of soils, but mostly those of a firm, dry, sandy 

 or gravelly nature, and with very little organic matter. 



On comparatively level areas of loose sand and gravel we 

 have the bird sage, Picrothamnns desertorum and the squaw 

 berry, a species of Lycium. The little greasewood, Sarcobatus 

 Baiteyi\ is also found on land of this character, but usually more 

 rocky. 



On the volcanic ash among the cinders of the crater form- 

 ing Soda lake we collected Psathyrotes annua. Iva nevadensis 

 was plentiful on the outer slopes, and scattered plants of white 

 sage, Eurotia lanata, were seeu. This plant is not common in 

 the region, although in other parts of the state whole valleys 

 may be covered with it almost exclusively. Another plant 

 found in this vicinity only in drifting sand, was a species of /)/- 

 cbrz'a, which we have called Dicoria Clarkae. Indian millet or 

 bunch grass, Eriocoma cuspidata, is about the only grass grow- 

 ing on these sandy lands. It is still abundant enough to be of 

 value to the range stock. 



The sands in the vicinity of Wadsworth and Kernley have 

 Parosela polyadenia as one of their chief plants. ( )n some sandy 

 lands where the soil has a tendency to form dunes, we find Tet- 

 radymia canescens^ '/'. Nuttallii^ and more Farely T. spmosa. 

 Astragalus leniiginosus is becoming more plentiful along the 

 canals, and seems to flourish with the additional moisture. 

 ( haetadelpha Wheeleri is especially plentiful the first vear after 



