308 Rydberg: Studies on the Rocky Mountain flora 



2-3 dm. high, trichotomously branched, with ascending branches; 

 bracts triangular, 5 mm. long or less; involucres in the lower forks 

 short-peduncled, the rest sessile, glabrous, turbinate, 3 mm. long; 

 lobes rounded, scarious-margined ; perianth white, glabrous, 2-2.5 

 mm. long, campanulate; divisions equal, obovate; filaments 

 slightly hairy below; ovary glabrous. 



In habit and leaf form this species resembles E. spathulatum 

 A. Gray, but the involucres are glabrous instead of tomentose, and 

 the lower ones are peduncled ; the stem is also perfectly glabrous. 

 It differs from E. tristichum Small and E. salicinum Greene in its 

 broader leaves and the scarious-margined lobes of the involucre. 

 Jones' specimens are smaller and more cespitose than the type. 



Utah: Sandy washes near Belknap, June 12, 1900, Stokes (type, 

 in herb. N. Y. Bot. Garden); Marysvale, August 30, 1894, M. E. 

 Jones 5969 (?). 



Eriogonum depressum (Blankinship) Rydb. comb. nov. 



Eriogonum ovalifolium depressum Blankinship, Mont. Agr. Coll. 



Sci. Stud. Bot. 1: 49. 1905. 

 Eriogonum rubidum frigidum Gand. Bull. Soc. Bot. Belg. 42: 194. 



1906. 



Dr. J. K. Small has for some years regarded this as a distinct 

 species, and it is found in the herbarium of the New York Botanical 

 Garden under a manuscript name of his, which, however, was never 

 published. 



Eriogonum ramosissimum Eastwood is related to E. Wright ii 

 Torr. and does not belong to the corymbosum group, to which 

 it was referred. 



Eriogonum crassifolium Benth. is the same as the original E. 

 flavum Nutt. What Coulter & Nelson and others have regarded 

 as E. flavum should be known as E. chloranthum Greene. E. 

 aureum Nutt. is the same, but the name was first published as a 

 hyponym, and when finally it was properly published there was 

 already an E. aureum Jones. 



Torrey and Gray, in their revision of Eriogonum, described E. 

 strictum Benth. as having subequal sepals, and they have been 

 followed by S. Watson and others. Bentham, in his original 

 description of the species, did not mention whether the perianth 



