1895.] Distribution of the N. Am. Marchantiacee. ae 
The above represents all that is known of the distribution 
of the most conspicuous and most generally recognized forms 
of hepatics in North America. It will clearly be seen that 
there is still much to do, particularly in the west, southwest 
and south todetermine with more definiteness the range of most 
of our species. Particularly is the state of Texas an excel- 
lent field for the enlargement of our knowledge concerning 
distribution. The fact that several species have not been re- 
collected since Charles Wright explored that region in 1849 
does not speak well for field work in that commonwealth. 
Greencastle, Indiana. 
