—98— 
that it had a wider distribution. The pleasant record is mine of knowing of 
five stations for it, and thus confirming his belief. I detected it growing 
among Pallavicinia Lyellii (Hook.) S. F. Gray, collected at Arlington, 
Staten Island, Nov. 28th, 1903, a Field Day of the Torrey Botanical Club, by 
Mr. W. T. Horne and brought to the New York Botanical Garden. At High- 
lands, Monmouth Co., New Jersey, I have collected it two consecutive sum- 
mers. The plants collected in September showed perianths with immature 
capsules and many antheridia. It was growing among Sphagnum plants ; 
Cephalozia connivens (Dicks.) Lindb. in fruit, in the vicinity. These plants 
were all growing lustily and showed the same shade of tender green and I 
noticed the Telaranea only from its conferva-like meshes in contrast with the 
more sharply defined Sphagna. While in North Carolina, February last, I 
found it at Pinehurst, Southern Pines and at Jackson Springs, all in Moore 
Co., growing along the borders of running .streams, with mosses. These 
plants showed the, ashy-green color of the descriptions. Their delicacy 
seemed almost ethereal among the larger forms of vegetation and it was won- 
derful to me that they could survive the winter (for I found old perianths) 
and start growing as soon as the snow melted away. Blepharostoma tricho- 
phyllum (L.) Dumort, is the only hepatic likely to be confused with it. But 
Telaranea nematodes longifolia has underleaves two or three cells in length, 
incurved at apices, while the former’s approximate the leaves in length. The 
leaves and underleaves are hair-like, the leaves being five-eight cells long, 
of a single series of cells to the basal cell. It is autoicous. The arche- 
gonia are on short postical branches, the one nearest the apex maturing 
first. This note is written with the intention of bringing this charming 
plant to the notice of hepatic students so that they may be on the lookout 
for it. I shall be grateful if any one finding it, will inform me. 
16 East 36th street, New York City. 
LICHENOLOGY FOR BEGINNERS— IV. 
Frederick LeRoy Sargent. 
(Begun in May, 1905, issue.) 
In the above consideration of the morphology of lichens our attention 
has been directed particularly to such modifications of form as afford charac- 
ters useful in systematic classification. But lichens are not only so many 
species to be named and classified ; they are living things adapted to the 
humble conditions under which they live: and no more interesting field is 
open to the student of lichens than that which concerns their biology. 
While a great deal has already been done in the study of the gonidia and 
their function, and upon the structure and development of other organs, com- 
paratively little has been attempted in the direction of learning the effect of 
the environment in influencing the form of the different parts or of studying 
the way these little plants meet the exigencies of their life. Such questions, 
for example, as the following' would, we think, repay careful investigation. 
