IRbodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 5 January, 1903 No. 1 
THE ULVACEAE OF NORTH AMERICA. 
F. 5. COLLINS. 
Tue family U/vaceae is here taken in the same limitations as by 
Wille in Engler & Prantl! excluding, the genera Pringsheimia and 
Protoderma, considered doubtful by him. The red algae, Bangia, 
Porphyra etc., included by earlier authors, are now generally recog- 
nized as belonging to the Rhodospermeae, the last important work 
including them among the U/vaceae being J. G. Agardh's mono- 
graph.” This work has been here used as the basis for generic and 
specific divisions for the remainder, though somewhat modified by 
later publications, especially by Rosenvinge.3 
There has been no general paper on the North American algae, 
with descriptions, since Harvey’s. In this, Porphyra, etc. were 
included in the U/vaceae, as was usual at that time. Excluding these 
there are described two genera and nine species. In Farlow's list of 
1876* there are two genera and six species. Since this no general 
list has been published, but in 1881 Farlow’s Manual ê contained two 
genera, eight species and six varieties, for the New England Coast, 
and the progress since then may be shown by the fact that the list 
! A. Engler & K. Prantl, Die Natürlichen Pflanzenfamilien, I. Abt. 2, 1897. 
* J. G. Agardh, Till Alg. Syst. part 3, Lunds Univ. Arsskrift, Vol. XIX, 1882. 
?L. Kolderup Rosenvinge, Grénlands Havalger. Meddelelser om Grénland. 
Kjobehavn, 1893. 
*W. H. Harvey, Nereis Boreali-Americana, part III. Chlorospermeae. 
Smithsonian Contributions to Knowledge. Washington, 1858. 
° W. G. Farlow, List of the Marine Algae of the United States. Report of the 
U. S. Fish Commission for 1875. Washington, 1876. 
€ W. G. Farlow, Marine Algae of New England and the adjacent coast. 
Report of U. S. Fish Commission for 1879. Washington, 1881. 
