Rydberg : Studies on the Rocky Mountain Flora 505 



This is a member of the A. uiultiflonis group and has been 

 confused with A. commntahis (T. & G.) Gray or A. incano-pilosiis 

 Sheldon. In A. commiitatiis, the stem is strigose-pubescent, the 

 branchlets more elongated and the outer bracts longer than in A- 

 crassidiis and often equalling or surpassing the inner bracts. It 

 may be the same as described by Lindley in Hooker's Flora and 

 DeCandoUe's Prodromus as " A. ramnlosus (i, incano-pilosus " ; 

 but here it is to be noticed that the word " incano-pilosus " is 

 printed in the same type as all the descriptions and not the special 

 type used for names. Hence "incano-pilosus" was a descriptive 

 term for the A. ramnlosus ,5, and not the name. If. however, 

 it should be taken as a name, which Mr. Sheldon did, it is a 

 nometi muiuni, as no further description is given, and then should 

 be disregarded. As Sheldon's Aster incano-pilosus, which is amply 

 distinct, has as a synonym, the older A. comniutatus (T. & G.) 

 Gray it must be dropped and A. conunutatus substituted. 



A. crassulus grows on dry plains and table-land at an altitude 

 of 1 200 m. 



Colorado : Mesas, La Veta, 1900, F. K. Vrceland, 6goa (type) 

 and 6c)0\ Denver, 1871, Dr. Geo. Smith, Sj ; Ridgway, 1894, F. 

 Tweedy, J 06 ; Pagosa Spring, 1899, C. F. Baker, Sj-/. 



New Mexico : 185 i, (f. Wright, 1155; Rio Dolores, AVw^mj. 



California: Valley, near San FiHpe, 1858, S.Hayes. 



Wyoming: Bear Lodge Mountains, 1898, L. W. Carter; 

 Moorcroft, 1897, Z. W. Carter; Dayton, 1899, F. Tweedy, 2031. 



North Dakota: Minot, 1891, Wright; Custer, 1892,7?/^/- 



bcrg, 773 . 



Montana: Park Co., 1887, F. Tweedy, 339 ; Colgate, Sand- 

 berg, MacDougal %i Heller, 1021 ; Montana Valley, Madison Co., 

 1899, Aven & Elias Nelson, 683c). 



Aster exiguus (Fernald) 

 Aster ciliatus Muhl. ; WiUd. Sp. PI. 3: 2027. 1804. Not 

 Walt. 1788. 



Aster hebecladus K. Gray, Syn. Fl. 2' : 185, under ^. nmltiflorus. 



Not DC. 



Aster multijlorus var. exiguus Fernald, Rhodora, i : 187. 1899. 

 I think that Aster ciliatus Muhl. is distinct from A. nmltiflorus ; 



