580 Evans: REPORT ON THE HEPATICAE OF ALASKA 
16. Underwood, L. M. A preliminary list of Pacific Coast Hepaticae. 
Zoe I: 361-367. 
Among the species quoted from Alaska two represent additions to the flora. 
LOCALITIES VISITED BY THE KELP EXPEDITION 
The portion of Alaska investigated by the Kelp Expedition 
falls almost entirely within the Pacific Coast Forest region, as 
defined by the United States Forest Bureau. One or two of the 
westernmost stations, where arctic conditions prevail, offer the 
only exceptions to this statement. All of the localities visited are 
on or near the coast and are characterized by a heavy rainfall and 
low temperatures, although extremes of cold are rarely encountered. 
These conditions are unusually favorable for the growth of He- 
paticae, and it is not surprising that they form a significant element 
of the flora. 
With five exceptions the localities where the Hepaticae were 
collected are situated in the southeastern part of Alaska, a district 
containing numerous islands separated from one another and from 
the mainland by narrow channels. Forests abound everywhere, 
the prevailing tree being the western hemlock, Tsuga heterophylla 
(Raf.) Sarg. Another conspicuous tree is the Sitka spruce, 
Picea sitchensis (Bong.) Carr., while the Alaska cypress, 
Chamaecyparis nootkatensis (Lamb.) Spach, and the mountaia 
hemlock, Tsuga Mertensiana (Bong.) Carr., are of frequent oc- 
currence. Among deciduous trees the red alder, Alnus rubra 
Bong., is perhaps the most abundant. The five stations which are 
not in the southeastern part of Alaska represent a portion of the 
territory where the western hemlock, the Sitka spruce, and the 
mountain hemlock reach the northern and western limits of their 
ranges and gradually disappear. The balm-of-Gilead, Populus 
balsamifera L., is a deciduous species occurring in the same region. 
The accompanying map (Text Fic. 1), after a sketch by Pro- 
fessor Frye, will show how most of the localities where specimens 
were collected are situated, and the following data, likewise 
supplied by Professor Frye, will give further information about the 
localities. The numbers correspond with those on the map. 
1. Aats Bay. North shore of Coronation Island. The col- 
lections were made about the south end of the west arm and on the 
