316 RypsperGc: Rocky MounTAIN FLORA 
closely related to that species, the second can scarcely be said to 
be so. Its habit, foliage, and pubescence are those of E. subtrinervis 
and only the involucral bracts are those of E. macranthus. 
Erigeron incanescens Rydb., E. eximius Greene, and E. viscidus 
Rydb. are all made synonyms of E. formosissimus Greene. The 
first has a hirsute involucre and is related to E. subtrinervis; the 
third and fourth have glandular-puberulent involucre and may well 
be united. The authors have included Erigeron formosissimus also 
among the annuals or biennials, though it is evidently a perennial. 
The third has also glandular involucres, but is almost glabrous and 
should have been included in E. asper of the New Manual if 
reduced. 
Erigeron glabellus Nutt., E. consobrinus Greene, E. oblance- 
olatus Rydb., and E. Earlet Rydb. are made synonyms of E. 
asper Nutt. E£. glabellus and E. Earlei have perennial branched 
rootstock; the rest are biennial with tap-roots. "They may per- 
haps sometimes be perennial, but there is no evidence of a branched 
rootstock. In E. glabellus the pubescence is spreading, in E. 
Earlei closely appressed. 
Erigeron nematophyllus Rybd. is made a synonym of E. 
Eatonu A. Gray. The latter is not uncommon in Utah, where 
I have collected it myself. A duplicate of the type is in the 
Columbia University herbarium. It has narrowly linear-oblan- 
ceolate, distinctly triple-nerved basal leaves and decidedly 
flattened achenes. In FE. nematophyllus the leaves are almost 
filiform and strictly one-nerved. Evidently Professor Nelson 
did not know EF. Eatonii, for what he has distributed under 
that name is E. nematophyllus. The only specimens of the 
real E. Eatonii from Wyoming in our collections are from Wind 
River Mountains, and there collected by Merrill & Wilcox and 
by Tweedy. 
Erigeron curvifolius Piper is made a synonym of E. luteus A. 
Nels., although they are not closely related, the former being a 
coarsely hirsute plant, with leafy stem, the latter being a closely 
strigose subacaulescent plant. It would have been much better 
to reduce Nelson’s own E. luteus to a synonym of E. peucephyllus 
A. Gray, to which it is closely related. 
Erigeron Parryi Canby & Rose, E. Scribneri Canby, and E. 
