1905] Fernald, North American Species of Eriophorum 135 
dium, Chamisso, the name is taken up in this paper. Fries, himself, 
until he learned that the Altai plant was unlike the Kamtschatka and 
Unalaska specimens, treated his own Æ. russeolum as a synonym of 
E. Chamissonis, and the same course is followed by Nylander, Rich- 
ter and some other European students. 
ERIOPHORUM CALLITRIX. 
The name Eriophorum callitrix (or callithrix) has been taken up 
by Scandinavian authors! for a very slender glabrous plant which in 
many characters is unlike the original description and plate of 
Chamisso's species.” This original figure represents a plant whose 
low stoutish habit, short broadish leaves, subinflated upper sheaths, 
and ovate-lanceolate scales, are all unlike those of the very slender 
plant represented as Æ. callitríx in Flora Danica, a characteristic 
species of broad northern range, and by no means rare in the western 
portions of Canada. Chamisso’s description of the leaves, “sub lente 
margine (apice basique evidentius) tenuissime serrulato-scabra" .... 
and “folia fasciculorum sterilium angustiora et evidentius serrulata," 
is also difficult to reconcile with the almost entirely glabrous (except 
at the very tip) filiform leaves of the plant long treated by European 
botanists as Æ. callitrix. 
The original plate of Lriophorum callitrix, however, very closely 
matches some northern specimens of the common American repre- 
sentative of Zriophorum vaginatum, a plant in which the leaves are 
usually scabrous on the margins, although the scales are often paler- 
margined and with more slender tips than represented in the original 
description and plate. In the latter character, however, the Ameri- 
can plant, like the European Æ. vaginatum, is very variable, and 
many specimens show scales which in color and form are quite in- 
separable from those of the Chamisso plant. 
As already stated in the discussion of Zriophorum Chamissonis, 
the Altai plant included in the original description of that species, 
and represented in the Gray Herbarium by specimens labeled by 
1 Anders. Bot. Not. (1857) 60; &c. 
? Cham. in C. A. Meyer, Mém. Sav. Étrang. Acad. St. Pétersb. i 203, t.2 
(1831). 
3 Fl. Dan. Suppl. t. 122 (1874). 
