132 Rhodora [May 
Arctium Lappa. Burdock leaves are much used in the country 
as draughts to relieve fevers and headaches. .The root is used in 
medicine. 
Leontodon autumnale. Under the name of Arnica this is used in 
alcohol to relieve bruises, lameness, and rheumatism. A Farming- 
dale man declares it the best remedy known. The buds of Balm of 
Gilead, Populus balsamifera, are used in a similar way. 
Taraxacum officinale. The dandelion is much used for greens. 
The root is said to give a very nice rich flavor to coffee, and it is 
sometimes used as a medicine. The roots of dandelion and of 
Aralia nudicaulis, the leaves of Chimaphila umbellata and Gaultheria 
procumbens, and the young shoots of hemlock and spruce are used in 
making root beer. 
A strange dish of greens was once prepared, under the direction 
of an old woman of Irish descent, in my father's house. "These 
were dandelions ; two or more species of Rumex, one of which was 
K. Acetosel/a ; the young shoots and leaves of the red raspberry; 
_the young fronds of Pteris aguilina, under the name of hog-brake ; 
and a generous portion of Canada thistle, Cnicus arvensis. 
GARDINER, Maine. 
NOTES ON ALGAE, — III. 
F. S; COLLINS: 
THE species here mentioned either are new to the American Flora, 
or their range is extended by the localities given. Unless other- 
wise indicated, they were collected by the writer. 
Protoderma marinum Reinke, Algenflora der westliche Ostsee, p. 
81, was found. by the writer at Bridgeport, Connecticut, on New 
Year's day, 190o, on the shore by Seaside Park, where it formed a 
very thin, transparent, pale green coating on small pebbles in pools. 
The coating consists of a single layer of small polygonal cells, with 
rather thick walls; when examined with the microscope, many of the 
cells were found to be producing zoospores. In May a little of the 
same species was found at Newcastle, N. H., but not fruiting. In 
November it was quite abundant at Revere Beach, Mass., and 
