May 12, 1910 39 



Even in the latest work out, the New Manual of Rocky 

 Mountain Botany, Professor Nelson's diagnosis of the genus 

 Atriplex in general, as well as his description of . /. hortensis in 

 particular, provides for the large and conspicuous type of seed 

 only. The new Gray's Manual, however, probably had this 

 plant in mind when the diagnosis of this genus, as there given, 

 was drawn up. I hope to see this plant more carefully and sat- 

 isfactorily described in future works that have occasion to men- 

 tion it. 



I tali Agricultural College, Logan, Utah. 



SOME NEVADA VIOLETS 

 By a. a. Heller 



The genus Viola is represented in both the northern and 

 southern temperate zones, but probably reaches its highest de- 

 velopment in America in the regions north of Mexico. It is but 

 sparingly represented in tropical or semitropical places, but the 

 species occurring there are of exceptional interest. As an ex- 

 ample: Of the five species found in the Hawaiian Islands, four 

 are shrubs, three of them with flowers of some shade of purple 

 or blue, and one with pure white flowers. 



Considering the ornamental character of nearly all the spe- 

 cies, it seems strange that so few of them have been introduced 

 into cultivation. 



Nevada, with its vast stretches of dry and treeless territory, 

 does not offer a suitable field for the genus, which, as a whole, 

 prefers fairly moist situations. We have in our collection six 

 named species, with a seventh, probably undescribed, sparingly 

 represented. Watson, in King's report, mentions two others, as 

 yet unknown to us. / '. cucallata is reported from the "Pah-Ute 

 range, Battle Mountains, and Ruby Valley." This, of course, is 

 not / ". cucitllata. I '. canina is said to occur on the East Hum- 

 boldt mountains. What present species this may represent, I 

 do not know. In the following account the original descrip- 



