RypDBERG: Rocky MOUNTAIN FLORA PS a | 
have seen and which I think belong here are Goodding 430, from 
Ten Sleep Lakes, Big Horn County, Wyoming, and labeled A. 
nardina. 
The pistillate plants of the four species are easier to distinguish. 
Antennaria mucronata has very dark greenish brown bracts, as 
dark as those of A. media but the inner bracts are oval, obtuse or 
even rounded at the apex, and inclined to be white-tipped. The 
leaves of the rosettes are narrower and with more appressed 
pubescence. The bracts of the pistillate head of A. umbrinella 
have about the same shape as those of A. mucronata but are 
from light umber-brown to almost yellowish, and of the same color 
throughout. The leaves are much shorter and broader, like those 
of A. media, but with appressed tomentum. The bracts of the 
pistillate heads of A. flavescens are still lighter than those of A. 
umbrinella, being yellowish or brownish white, oblong and scarcely 
more than half as broad, but still obtuse. The leaves are 
yellowish. It would have been better to have designated Rydberg 
& Bessey 5146 instead of 5145 as the type, because the former 
number contains pistillate as well as staminate plants. The pis- 
tillate heads of A. reflexa have bracts of a color similar to that of 
A. umbrinella but they are decidedly acute and resemble those of 
A. media in shape. 
The staminate plants of this group are very rare, except in 
Antennaria flavescens, in which it is the common form, the pistillate 
plant being comparatively rare. In the herbarium of the New 
York Botanical Garden the staminate plants are represented by 
the following specimens: 
Antennaria alpina (L.) Gaertner: J. Kdllstrém (Tronfjeld, Nor- 
pe 
way). 
. monocephala DC.: Wm. Horne (Karluk, Alaska), Blaisdell (Cape 
Nome, Alaska). 
. media Greene: Hall & Chandler 686 (Mt. Goddard, Calif.); 
Sonne 160 in 1888 (Bear Creek, Placer Co., Calif.) and in 1892 
(Coldstream, Calif.). 
mucronata, E. Nels.: L. Goodding 430 (Ten Sleep Lakes, Wyo.). 
. umbrinella Rydb.: Flodman 859 (partly) (Long Baldy, Mont.) ; 
Macoun 69339 (Meyer’s Creek, B. C.); Umbach 615 (Midvale, 
Mont.); Rydberg & Bessey 5164 (Mt. Chauvet, sagen Shear 
& Bessey 3971 (Steamboat Springs, Colo.). 
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