76 
Harry, a half or a quarter of a century ago. It was very proper 
that Tweedy in 1885 and in 1886, should report, among the 
vegetation of the Geyser areas of the Yellowstone Park, such 
plants as Chrysopsis villosa (now known to belong to the plains 
of Kansas and Nebraska), Gnaphalium Sprengelit (a South 
American plant), Panicum dichotomum var. pubescens, Castilleja 
minor, Hulsea nana and Botrychium ternatum var. australe, for 
at that time the plants were known, although erroneously so, 
under those very names: but it is not proper now, after all the 
work done on the flora of the region by Tweedy, Aven Nelson, 
Elias Nelson, Dr. Mearns, Rose, Burglehouse, Ernst Bessey and 
myself, and others. A little attention paid to my Flora of 
Montana and the Yellowstone National Park and other more 
recent publications would have shown to anyone that these names 
meant Chrysopsis depressa, Gnaphalium sulphurescens or G. 
lagopodioides, Panicum thermale, Spraguea multiceps, Castilleja 
exilis, Hulsea carnosa, and Botrychium Coulteri. We are not 
surprised to see Parry in 1863 having reported for Colorado, 
Papaver nudicaulis, Gentiana frigida and Pedicularis sudetica, 
instead of Papaver radicatum, Gentiana Romanzovii and Pedicu- 
laris scopulorum. It is a little more surprising to see it done 
to-day (see page 565). The writer himself was perhaps excusable 
for enumerating among the plants of the Black Hills, in 1894 
(the year when the manuscript was prepared, printed in 1896), 
such plants as Neillia (now Opulaster) opulifolia (an eastern 
species), Synthyris rubra (a northwestern plant), Stachys aspera 
(eastern), Osmorrhiza nuda (Californian), and Mertensia sibirica 
(Asiatic) ; but he would not be if he did it to-day. 
А good phytogeographer should be fairly well acquainted with 
the nomenclature of the time. It matters little which school 
he follows. It would not do to simply accept and copy any name 
given in a certain report, without judicious sifting. If care is 
not taken, it may happen, as it has in Professor Harshberger’s 
book, that the same plant may be under different names, even 
on the same page. On pages 192-4, we find for instance both 
Alsine (Arenaria) verna and Arenaria (Alsinopsis) propinqua, 
which, as far as the Rockies are concerned, represent the same 
