—93— 
Mr. J. Warren Huntington, Amesbury, Mass. Webera nutans caespi- 
Aw# Sch. , st. ; Grimmia Olneyi Sulliv. , st. Collected in Amesbury. 
Mr. Severin Rapp, Sanford, Orange Co., Florida. Thuidium micro- 
phyllum (Schwaegr.) Best; Leskea microcarpa Sch. Collected in Sanford. 
Miss Alice L. Crockett, Camden, Maine. Usnea trichodea Ach. ; Pan- 
naria lanuginosa (Ach. ) Koerb. Collected in Camden. 
Mr. G. K. Merrrll, 564 Main street, Rockland, Maine. Cladonia reti- 
culata (Russell) Wainio (C. Boryi Tuck). Collected in Knox Co., Maine. 
Mrs. M. L. Stevens, 39 Columbia street, Brookline, Mass. Cladonia 
squamosa (Scop.) Hoffm. forma. Collected in Laconia, N. H. 
SPORE DISTRIBUTION IN LIVERWORTS. 
W. C. Coker. 
(Taken by permission from Botanical Gazette, 37:1, 1904, p. 63.) 
It has no doubt been noticed by all observers of the liverworts that, while 
terrestrial species have as a rule (Riccia and Sphaerocarpus are exceptions) 
their ^apsules raised on elongated stalks, furnished either by sporophyte or 
gametophyte, those which grow on trees ’seldom elongate their stalks more 
than enough to free the capsule from the perianth. This difference is 
plainly due to the fact that the arboricolous species are sufficiently elevated 
to allow their spores to be well scattered without any special contrivance. 
It is interesting to note, however, the behavior of the fertile branches of Por- 
ella platyphylla Lindb. While the vegetative branches of the liverworts 
remain closely appressed to the bark of the tree the fertile shoots bend away 
some time before the spores are ripe, and often project a centimeter or more 
from the substratum. This exposes the spores to the free play of the wind 
and no doubt prevents many of them from being caught by the leaves of the 
mother plant. This habit seems to show that even in arboreal forms it may 
be an advantage to have the capsule removed some distance from the sub- 
stratum. It will be noticed here that Porella resembles the Marchantiaceae 
in giving over to the gametophyte the duty of lifting the capsules. 
University of North Carolina, Chapel Hill, N. C. 
THE ADVANTAGE OF FREQUENT VISITS TO MOSS LOCALITIES. 
B. D. Gilbert. 
One of the most interesting spots for moss collecting which it has been my 
fortune to strike is a small swamp lying along the creek and near the head of 
one of the ponds that line the Sanquoit Valley, Oneida County, N. Y. 
Lying not more than a quarter of a mile from my home, and easy of access, 
it is one my favorite hunting grounds ; and I seldom go there without finding 
some species which had not previously attracted my attention. 
