114 
IOWA ACADEMY OP SCIENCES. 
be found upon mud-flats, upon dripping rocks, on moist lime- 
stones and sandstones, on the bark of trees, on old logs, in 
tangled mats of moss, and other similar habitats. But not 
infrequently they flourish on rocky ledges and sandy or clayey 
tracts, which are dry and barren during the greater part of the 
summer. Their power of re-juvenation, however, almost 
equals that of tbeir near kin, the mosses, and moisture almost 
instantly revives them, — a fact of much interest to the student 
of these forms, for dry, unsightly material collected during the 
most unfavorable seasons of the year, may be rendered fit for 
study in a few moments. 
The following notes on twenty-one species are offered not 
as a complete and exhaustive report on the Hepaticce of Iowa, 
but rather as an introduction to this, in Iowa much-neglected, 
group, with the hope that interest in it may be aroused, and 
the way paved for a full account of our species and their dis- 
tribution, — for the list will no doubt be materially increased. 
Although its nomenclature is not always strictly correct, 
the sixth edition of Gray’s Manual is followed for convenience, 
because of its general use. 
Unless otherwise stated, the material upon which this report 
is based, is deposited in the herbarium of the State University, 
and was personally studied by the writer.* 
Unless special credit is given, the specimens were collected 
by the writer, Mr. T. E. Savage assisting at Wildcat Ben, 
Muscatine county, and with Mr. P. C. Myers on Muscatine 
Island, Louisa county. 
Order Jungermanniace^. 
Frullania virginica Lehm. On the bark of trees, usually near 
the base, on low grounds, Muscatine Island, Louisa county; not 
common. 
F. eboracensis Lehm. On the bark of trees, near base, 
in Johnson and Louisa counties, and on both bark of trees, and 
sandstone, in Wildcat Den, Muscatine county; very common; 
also reported from Story county by Bessey. f 
F. ceolitis Nees. On sandstone, in Wildcat Deu, Muscatine 
county; not common. 
F. scpiarrosa Nees. Common on limestone bluffs at Iowa 
City, and at Ft. Dodge. 
*Prof. L. M. Underwood kindly assisted in a few of the earlier determinations. 
IBull. la., Agric. Ooll., Nov., 1884. 
