oa AMERICAN FERN JOURNAL 
If a sufficient number of members are interested, 
I shall make a distribution of the species belonging 
to the genus Polystichum next fall. With this purpose 
in mind I wish to ask two things, viz., the loan of speci- 
mens in this group which are now in the herbaria of 
members of the Society. Such specimens should not 
be sent before the first of next September, should be 
plainly marked with the full name or initials of the 
owner and would, of course, be returned postpaid; 
second, that all those who are so situated that it is 
possible for them to do any collecting make abundant 
collections of such species of this genus as are accessible 
and send them in to be distributed amongst those who 
make contributions to the general exchange. I have 
the promise of a considerable quantity of P. Jennings 
for this exchange and may be able to secure several 
specimens of P. Andersoni. 
L. S. Hopkins. 
The following should be added to the list of errata on 
page 130 of Vol. 7: 
Page 38, line 3 from bottom. For Institute, read Institution. 
Page 54, line 28. For The var. Michauxii (Spreng.) 2. comb., 
read The var. Micuavxit (Spreng.) Farwell. 
Table of Contents to Vol. 7, line 24. For Duc. 17, read Fes. 23, 
8. 
‘Mr. Farwell published this combination in Ann. Rep. Mich. 
Sci. 18: 79, Jan., 1917, about four months before Mr. B s article 
appeared—a fact unknown to the editors at ime. 
