12 
though not to its mouth, revealed no more stations for it. The stems were of 
unusual size, the longest noted 40 cm. long, but commonly 15-30 cm. Examples 
of this were likewise sent to M. Cardot, who state’d in a letter that similar ro- 
bust forms had been sent by Cheney from northern Wisconsin. The leaves 
were about the same in size as those from the typ£ locality at Romeo, entire or 
slightly denticulate at the point. The stems are much divided, a single one when 
separated from the mass and floated so as to display its form showing a surpris- 
ing number of branches to be held by the hair-like basal part. The longest and 
most divided were found in the most rapid current. In cross-sections the stem 
is broadly oval, the shorter diameter commonly from o. 2-0.4 mm., the longer 
from 0.25-0.55 mm. The rind is of dark brown, very thick-walled cells, their 
lumen often nearly closed or entirely disappearing, the outermost cells usually 
the more open ones. The ground-tissue consists of large, thin-walled, open 
cells, tinged with yellow. The central strand is lacking, or none was found as 
far as examined. The stem seems well constructed to bear longitudinal strain, 
and to yield to compression laterally as it waves about in the running water. 
It generally curves a little at the base so as to bring it parallel with the surface 
of the substratum, sometimes as much as a centimeter. This portion is also- 
densely covered, with brown rootlets, 18-30^1 in diameter, by means of which it 
holds to the stone. In some cases it is reenforced by one or two short branches,, 
covered like the end of the main stem with rootlets, in this way forming a kind 
of foot to anchor it. Since several stems, when growing in such masses, gener- 
ally start from closely adjacent points, their interlocking basal parts form a 
meshwork resembling a felty disk when removed from the rock, in this manner 
doubtless aiding one another in maintaining their hold. 
From all at present known, F. Umbachii is of northern distribution, being 
found in the region of the upper Great Lakes and adjacent parts of the basin of 
the Mississippi. Even the localities of the three stations near Chicago may 
date from the time when they made a part of the lake system, and the upper- 
lakes were drained southward through the Chicago outlet. 
Chicago, Illinois. 
SULLIVANT MOSS SOCIETY 
Report of the President 
The President is able to report a continued interest in the work of the Sul- 
livant Moss Society on the part of its members. Under the careful editorship 
of Dr. O. E. Jennings, the Bryologist has maintained the high degree of ex- 
cellence which the Society has been led to expect. The current volume, exclus- 
ive of the index, numbers 96 pages and is, therefore, of the same size as the pre- 
ceding volume. Twenty-five original articles and two obituary notices have 
been published during the year; the illustrations include thirteen plates and 
seventeen figures in the text. Of the original articles seven relate to the mosses,, 
seven to the hepatics, and eleven to the lichens. The articles on the mosses 
were written by seven different contributors, those on the hepatics by five, and 
those on the lichens by four. These figures, if compared with the corresponding 
