RYDBERG: STUDIES ON THE Rocky MOouNTAIN FLORA 19 
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 7. 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. 1808. 
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. Pl. 304. 1891. 
Troximon purpureum A. Nels., Coult. & Nels. New Man. Cent. 
Rocky Mts. 599, in part. 1909. Not Macrorhynchus pur- 
pureus A. Gray. 1859. 
For this species I had adopted the name Agoseris Greenet, 
basing it upon Troximon gracilens Greenei A. Gray, but I had 
overlooked the fact that there had been published an A goseris 
Greeneana based on Troximon elatum Greene. The latter should 
be known, however, as A. major Jepson, published in September, 
1891, 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 A goseris 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 
