191 
minus, Hpe.), 1839; and Bridel’s name for the specimens from 
Ohio and the Northern United States (Z. minus, Sull.), and call 
them Z. albidum (Brid.) Lindb.? In order to be certain that 
Bridel’s D. a/bidusm is the same as the Ohio specimens in Sullivant’s 
herbarium, I have asked Dr. W. G. Farlow to make the compari- 
son for me at Berlin, and he has kindly consented to, and taken 
a portion of Sullivant’s specimens for that purpose. I have not yet 
heard from him, but meanwhile this much is certain, that Z. 
minus, Sulliv. of Lesquereux and James’ Manual, p. 91, is not the 
same as L. minus, Hpe., and that the description of L. sediforme 
of the Manual is meant for specimens of the same Hampe’s Z. 
minus. What the European specimens shall be called, however, 
had better be determined by some one who has more ready 
access to the types than I. M. Bescherelle, to whom M. Franchet 
also referred the question, says, “J’ai etudie le Bryum glaucum 
minus forma pumilum de Michaux, et je n’y vois aucune differ- 
€nce avec le Dicranum albidum, Brid.” But I doubt the cor- 
rectness of this statement unless he has seen Bridel’s type, for 
Bridel_ in his Bryologia Universalis i. 409, 1826, cites the 
following localities for D. glaucum, var. albidum, “ Pennsylvania, 
Virginia, et Massachusetts unde D. Torrey misit.” One of these 
specimens is preserved in the Torrey Herbarium, labelled “ Dic- 
fanum albidum, No. 14, legit Schweinitz, Pennsylvania,” and is 
identical with Sullivant’s specimens from Ohio, having the leaves 
longer than Z. minus, Hpe., apex more acuminate, hyaline border 
of the base narrower. The difference in the aspect of the two 
also is very marked, ZL. minus, Hpe. being shorter, denser, with 
more crowded leaves, which are more closely imbricated and 
“rect, with incurved cucullate apex. The range also is different, 
L, minus, Hpe. not having been collected thus far north of Car- 
olina, while 7. minus, Sull. occurs throughout the Northern 
States, also running south into Louisiana. 
I shall be pleased to receive and examine specimens of Leu- 
“oryim from any and all collectors. 
ELIZABETH G. BRITTON. 
