50 
Mycologia 
in works by other botanists who gave Mr. Willey due credit for 
aid on lichens. It is not worth while to discuss each paper sepa- 
rately; but a list of his writings is given at the close of this sketch 
with explanatory notes on each paper, except in a few instances 
in which the title indicates content sufficiently well. The six 
papers which give Mr. Willey credit for work on lichens are 
appended. 
The “List of North American Lichens which appeared in 
1873, was helpful to many students two or three decades ago. 
This was a paper of 30 pages. Much more important and helpful 
was a 58-page paper, “An Introduction to the Study of Lichens 
with a Supplement,” which appeared in 1887. Probably every 
student of American lichens at that time possessed a copy of this 
work if he could get it. Mr. Willey’s “Synopsis of the Genus 
Arthonia,” a 62-page monograph, may be regarded by some 
botanists as bis best contribution to botany ; but the writer’s 
judgment is that the local work about New Bedford, culminating 
in 1892 in the rather short paper already considered above, is the 
best monument to his patience and skill as a student of lichens. 
Many botanists look with disfavor upon local floras; but this one 
is exceptional and represents a life work. On the other hand, 
Mr. Willey’s synopsis of the Arthonias, though its author un- 
doubtedly had an excellent knowledge of the genus, was in the 
nature of a compilation of existing descriptions and scarcely a 
critical work. 
To Mr. Willey, we must give great credit for editing the second 
volume of Tuckerman’s Synopsis after the death of its author. 
No one else could have done this important work so well as he 
who was, after the death of Tuckerman in 1886, the leading 
student of North American Lichens, and who was also especially 
fitted for the task by a thorough acquaintance with Tuckerman’s 
methods and work. 
Mr. Willey’s output in new species was only 26. For his day. 
when little was known of our lichens, this seems like a small 
number; but the explanation is that Tuckerman was naming 
lichens by hundreds, and Mr. Willey’s discoveries were named by 
this greatest American Hellenist until his death. So all new 
species described by Mr. Willey were named after the death of 
