Rydberg : Studies on the Rocky Mountain flora 1 9 



dently Professor Nelson did not have in mind the true Macro- 

 rhynchus purpureus, on which Troximon purpureum (A. Gray) A. 

 Nels. should have been based, but a mixture of A. gracilens and 

 A. Greenei Rydb. If any reduction should have been made, T. 

 gracilens should have been made a synonym of Troximon aurantia- 

 cum Hook. In the herbarium of Columbia University there is a 

 duplicate of the type of the latter and one specimen cited in the 

 original description of the former. The only difference I can see 

 is that the outer bracts in T. aurantiacum are broader and in- 

 clined to be obtuse. As to Agoseris Greenei Rydb. the name has 

 to be changed. The plant should be known as 



Agoseris graminifolia Greene, Bull. Torrey Club 



25: 124. 1898. 



Troximon gracilens Greenei A. Gray, Proc. Am. Acad. 19: 71. 



1883. 

 Agoseris gracilenta Greenei Greene, Pittonia 2: 177. 1891. 

 Agoseris Greenei Rydb. Mem. N. Y. Bot. Gard. 1: 459. 1900 



Not Agoseris Greeneana O. Kuntze, Rev. Gen. PI. 304. 1891. 

 Troximon purpureum A. Nels., Coult. & Nels. New Man. Cent. 



Rocky Mts. 599, in part. 1909. Not Macrorhynchns pur- 

 pureus A. Gray. 1859. 



For this species I had adopted the name Agoseris Greenei, 

 basing it upon Troximon gracilens Greenei A. Gray, but I had 

 overlooked the fact that there had been published an Agoseris 

 Greeneana based on Troximon elatum Greene. The latter should 

 be known, however, as A. major Jepson, published in September, 

 1 89 1, while Kuntze's name was published in October, 1891. 



A closer investigation of Agoseris graminifolia persuaded me 

 that it could not be kept distinct from A. Greenei (A. Gray) Rydb. 

 although the leaves of the specimens from type collection are 

 more entire than usual. On the sheet in the collection of the 

 New York Botanical Garden they are wholly entire, but the 

 figure published and drawn from the type specimen shows four 

 leaves with a few short lobes. 



Under Troximon arizonicum Professor Nelson gives as syn- 

 onyms Agoseris elongata Greene, A. rostrata Rydb., and A. humilis 

 Rydb. The first is only a manuscript name, but the specimens 

 so named are rightly referred to T. arizonicum. Agoseris humilis 



