OF ARTS AND SCIENCES. 91 



E. Nevadensis, Gray, Proc. Am. Acad. viii. 649. — Sierra Nevada 

 and adjacent mountains in W. Nevada. 



Var. PYGMiEus, Gray, 1. c. An ambiguous form, of the higher 

 peaks of the Sierra Nevada. 



= = Caules debiles, diffusi, demum ramosi : capitula parvula, ligulis 

 lin. 3 longis albis vel purpurescentibus. 



E. Eatoni. Substrigoso-pubescens ; caulibus e radice subfusiformi 

 3_9.pollicaribus ; foliis lineari-lanceolatis sen angusto-linearibus (poll. 

 2-3 longis lin. ^-2 latis) supra glabratis ; involucri bracteis subhirsutis 

 fere oequalibus. E. ochroleucus^ Eaton, in Bot. King, 152, non Nutt. 

 — Wind River Mountains (C. Richardson) to the Uinta and Wahsatch, 

 at 7,000 to 10,000 feet (Watson, Eaton, M. E. Jones), and S. Utah, 

 Palmer. 



E. TENER. Cinereo-puberulus ; caulibus exiguis laxis e caudice 

 multicipiti ; foliis spathulatis seu lanceolatis, radicalibus lamina ^2- 

 poUicari in petiolo sat longo, caulinis superioribus linearibus parvis ; 

 involucro lin. 2 longo, bracteis inaequalibus. E. ccespitosus, var. tener, 

 Gray, Bot. Calif, i. 328. — High mountains of Nevada and adjacent 

 part of California ; also of Central Utah, Watson, Brewer, Parry. 



++•!-+++ Cinereo-canescentes, pube brevi molli vel hispidula baud ad- 

 pressa : caules e caudice valido ramoso plurimi, foliosi, aut simplices 

 aut superne ramosi, capitula mediocria pauca vel solitaria gerentes : 

 folia latiuscula. 

 -= Ligulae 18-30, latiusculae, oblongo-lineares, purpureas, modo Asteris. 

 E. ASPEKUGiNEUS. Pube hispidula minuta cinereus ; caulibus sim- 

 plicibus 2-6-pollicaribus ssepius monocephalis ; foliis caulinis iuferiori- 

 bus radicalibusque obovato-rotundis vel spathulatis (lin. 3—5 latis) 

 petiolo longiusculo, superioribus lato-linearibus ; involucro e bracteis 

 paucis aequalibus ; pappo simplicissimo. Aster asperugineus, Eaton 

 in Bot. King, 142. — E. Humboldt Mountains, Nevada, Watson. 

 = = Ligulae numerosse uniseriales, albae, nunc pallide roseae : involu- 

 crum pi. m. villoso-hirsutum. 

 a. Pappus simplex. 

 E. CANESCENS, Torr. & Gray. — Northern Rocky Mountains. 



b. Pappus duplex, exterior brevis setuloso-squamellatus. 

 E. c^SPiTOSus, Nutt. in Trans. Am. Phil. Soc. 1. c. ; forma parvula. 

 Diplopappus grandijlorus, Hook. Fl. Bor.-Am. ii. 21, forma validior 

 macrocephala. — Rocky Mountains from the Saskatchewan to Colorado 

 and Utah. 



