MEMOIRS 
TORREY BOTANICAL CLUB. 
Vol. IV. No. I. 
Index to Hepaticarum—Part 1. 
By Lucien MARCUS UNDERWOOD. 
. The last general synopsis of the Hepaticæ was published by 
Gottsche, Nees and Lindenberg, forty-six years ago (No. 315), 
and with the single exception of a review of the literature of the 
decade 1847-58 (No.'297), no general bibliography of any con- 
siderable period has ever been published. The literature is yearly 
growing more formidable, and the need of an index is seen in the 
frequent duplication of names and descriptions. It is desirable, 
therefore, to take our bearings in order that we know more clearly 
the nature and extent of our publications. The intended purpose 
of this index is: (1) To present an author catalogue of the publi- 
cations relating to this group, supplemented by a topical index for 
the purpose of more ready reference; (2) An index of all the 
species described, with a reference of each to the genera recog- 
nized at the present time; and (3) A classified arrangement of the 
species to show our present knowledge of their geographic dis- 
tribution. The first of these we present herewith. That it is 
entirely complete we cannot reasonably hope, yet we believe it 
fairly represents the literature bearing on the subject to the close 
of the year 1892. We shall gladly receive notice of any omission 
or needed correction. It is hoped that the further parts will not 
be long delayed. 
While the greater part of the more important literature is in 
our own possession, access to several rare papers has been possible 
only through the kindness of the authorities of the library of Co- 
lumbia College, the Gray Herbarium, and the Royal Herbarium 
