— 4 6 — 
margined by the adherent segments. Spores roughened, 25 n, maturing in 
autumn. 
Type locality, Pennsylvania. On bark of trees and decaying trunks, in 
woods. Widely distributed throughout the U. S. east of the Mississippi, but 
not very abundant. 
Illustrations: Sulliv. 1 . c. & leones PI. 90; Hedw. 1 . c. ; Suppl. pi. no 
(Pterogoniu?n decumbens ) and pi. 243 ( P . ascendens). 
Exsiccati Sulliv. Muse. Allegh. 83 (. Pterigynandrum ) ; Sulliv. & Lesq. 
Muse. Bor. Am. Ed. 2. 384. Aust. Muse. Appl. 295. Drummond Muse. 
Am. (S. States) 88. Ren. & Card. Mdse. Am. Sept. Exs. 236. Grout N. Am. 
Musci Pleur. 108. 
The variation in length of leaf is due largely to the variation in the length 
of the acumination. Brooklyn, N. Y. 
SOME LICHENS OF MT. WATATIC, MASSACHUSETTS. 
Reginald Heber Howe, Jr. 
No one thing has further advanced the knowledge of the distribution of 
birds than a very general publication of local lists during the past decade. 
Less than a dozen titles would, I think, complete the bibliography of such New 
England lists of Lichens. It is for this reason that the present list appears, 
and it is hoped that it will be but the first of many to follow. The words 
“southern,” “eastern,” as applied to North America, now answer for the 
distribution of many species, and these terms might be made more specific if 
authentic local lists from many points were accessible. 
May I be permitted, though a comparatively recent and yet ignorant, 
student of Lichens, to speak humbly of Lichenology. I entered its field from 
that of Ornithology, and examined its state with a somewhat trained scientific 
mind, and nullius addictus jur are in verba magistri. At once I felt, as 
a very sane lichenist put it to me recently, that unfortunately the study of 
Lichens has a peculiar magnetism for the posing scientific “crank.’’ 
Secondly that no manual existed for the army of field students, often 
“unscientific,” as the expression is, but nevertheless often the ones, from 
their very numbers, to contribute much of real value, on question of distribu- 
tion, habitat, etc., not to say as collectors. Thirdly, the marked tendency 
toward verbosity and overdone scientific descriptions found throughout 
Lichenological literature, and lastly the unprecedented use of tri-nomials and 
quadri-nomials for mere contingent phases. 
These statements will, I know, be considered by some to reflect upon my 
ignorance as a Lichenist, yet I feel somewhat strengthened to withstand 
comment, from the fact that my views are those also of one of the recognized 
and truly scientific Lichenologists of New England. 
Mt. Watatic is one of the highest of the group of foothills, known as the 
Peterboro Hills. It occupies a position in the northwestern-most corner of 
Middlesex County, a little over a mile from the New Hampshire line, in the 
township of Ashby. Its altitude is about 1875 feet. Spruce covers its north- 
