257 
Botanical Notes. 
A Lichen new to the United States. Alectoria cetrariza (Ny}.) 
Eckfeldt. Thallus erect, tufted, caespitose and spreading, slender, 
softish, at first compressed ; lacunose and channeled beneath, the 
branches becoming terete; terminating in subulate extremeties, 
olivaceous to lead.color and darkening, canescent. 
Apothecia of middling size terminal and subterminal, lead 
colored, margin uneven, dentate or disappearing, becoming de- 
flexed with a thin bloom. Spores ovoid-ellipsoid, hyaline con- 
tinuous, quite constantly $~7,, mic. 
This lichen was first discovered by Mr. Thomas Howell, in 
October, 1882, on the branches of small shrubs, bordering 
the sea, at Tillamook, Oregon. From _ its resemblance 
and relationship to the well known Cetraria Californica, Tuck., 
no doubt this interesting plant has been collected before, and 
distributed under an erroneous name. It is evident that this 
lichen is peculiar only to the northwestern coast. 
JOHN W. ECKFELDT, M.D. 
An Economical Linden. While walking recently in West 
Chester Park between Shawmut Avenue and Washington Street, 
of this city, my attention was attracted by 
a linden tree, the trunk of which was con- 
siderably decayed on one side. Closer obser- 
vation showed that from a strip of living tis- 
sue at the edge of the decayed portion, there 
arose several adventitious roots which en- 
tered the disintegrating mass of dead wood, $ 
and ramified extensively through it, as indi- }j 
cated in the accompanying sketch. I have 
examined a number of other trees of various 
sorts, the trunks of which have suffered sim- 
ilarly from horses gnawing off the bark, but 
none of them have shown such an attempt as 
this—to utilize the products of their own 
decay. 
FREDERICK LEROY SARGENT. 
Boston, Mass. 
