BOTANY OF THE ROUTE. 
71 
Aspidium spinulosum, Willd. u ex-Hooker.” (G-.) Woods; 4-6 feet high. 
A. munitum, Kunth. (G.) Woods, common; forming dense tufts 3 or 4 feet high and wide. 
Blechnuh boreale, Swartz. (G.) Spruce forest at coast, not rare; 2 feet high. 
Marchantia polymorpha, (Hepaticce,) Linn. (Steilacoom, S.) 
I have received the following letter from Mr. Samuel Ashmead, relative to two interesting 
marine plants, which were submitted to him for examination. 
Academy of Natural Sciences, 
Philadelphia , April 20, 1857. 
Dear Sir: I received the two specimens of marine Algae from Washington Territory, and as 
they do not decompose in fresh water, I transferred them to new papers and marked the names 
thereon. 
Phyllospora Menziesii, A g. This plant was first discovered by Mr. Menzies in the deep 
waters of Nootka Sound, where it sometimes grows to an enormous length. The specimen you 
send is much injured by transportation; hundreds of the marginal leaves were broken off. It 
is a fertile specimen having “ receptacles, ” which renders it very interesting. You will find 
it accurately described by Harvey in his Nereis Bor. Am. p. 62, vol. 3, or 5, Smithsonian Con¬ 
tributions to Knowledge. Collected in Puget Sound, by Dr. G. Suckley, U. S. A. 
Callophyllis laciniata, Kutz. This plant is exceedingly rare on the American coast; the 
species is subject to considerable variety of form, but it is easily recognized under the micro¬ 
scope, by the peculiar internal structure of the frond. You will find it also described by 
Harvey, Nereis Bor. Am. p. 171, vol. 3, or 5, Smithsonian Contributions to Knowledge. Col¬ 
lected at Shoalwater bay, by Captain C. J. W. Russell. 
As I had not before seen either of these species, I am much pleased to be able to add them 
to my collection. 
Very truly, yours, &c,, 
SAMUEL ASHMEAD. 
Doctor Cooper. 
