62 
phylla, here near the southern limit of their ranges. At Jef- 
ferson, I followed for several miles the old stage road towards 
Gainesville—probably the road that Beyrich had traveled eighty 
years earlier. I found one small Riccia here, but it was not R. 
Beyrichiana. At Athens, the seat of the University of Georgia, 
about eighteen miles from Jefferson, I had the assistance of a 
sketch made by Dr. R. M. Harper, indicating the type locality 
of Riccia nna a are discovered by him in 1900. With 
the aid of this was able to find on the university grounds 
three species a a Hh proved to be R. dictyospora, R. 
Austini, and the long lost R. Beyrichiana. The first and the last 
grew on the upper margins of granite ledges, in places that were, 
at the time, thoroughly moistened by water seeping down from 
above, a habitat of a rather different character from those in 
which I had found species of Riccia in California and New York. 
I am informed, however, that these ledges are more or less arid 
during a good part of the summer. 
e chief motive for my stop at Augusta, where one day was 
spent, was to rediscover, if possible, a minute moss, Erpodium 
biseriatum, a species whose history has been somewhat similar 
to that of Riccia Beyrichiana. This plant was collected at or 
near Augusta by the distinguished American bryologist Sullivant 
in 1845, though the plant was so minute and there was so little 
of it that he apparently did not know at the time that he was 
collecting it. A considerable number of years later Mr. C. F 
Austin, in studying some of the foliose Hepaticae of the Lejeunea 
tribe, collected by Sullivant at Augusta, picked out a few sterile 
minute plant which he considered to be a foliose cee 
and which he described as a new species under the name Lejeun 
btseriata. A little later Austin perceived that the plant was a 
States.* This Erpodium biseriatum has, to all appearances, 
never been met with again, and I was not so fortunate as to 
rediscover it in the rather brief time that I was enabled to devote 
* See Britton, E. G., A long lost genus to the United States—Erpodium (Brid.) 
Cc. M. naar 8: 71. 1905. 
