460 
filament; in the latter case they are usually secund, but some- 
times alternate; they issue about at right angles to the filament, 
and are usually produced a short distance below the point of 
growth. 
Found growing on Rhodymenia palmata Grev., in company ~ 
with other epiphytic algae, in a warm shallow tidepool on Spec- 
tacle Island, Penobscot Bay, Maine, from July to September, 1894 
to 1896. Distributed in Collins, Holden and Setchell, Phycotheca 
Boreali-Americana, No. 274. 
PHYLLITIS ZOSTERIFOLIA Reinke, Algenflora der Westlichen Ostsee, 
62. 
Distinguished from the common P. fascia Kuetz. by the very 
narrow, strictly linear frond. P. fascia varies much in width, 
but even the narrowest forms broaden upward, and are propor- 
tionally much wider than those of this species, which may attain 
a length of 3 dm, with a width of hardly 5 mm. After one has 
recognized the plant there is no danger of mistaking for it any of 
the numerous forms of P. fascia ; which moreover is essentially a 
winter and spring plant, while P. zosterifolia is a plant of the sum- 
mer months. Collected at Magnolia, Mass.,at extreme low-watet 
mark, by Miss Cora H. Clarke, August, 1896. Distributed in Col- 
lins, Holden & Setchell, Phycotheca Boreali-Americana, no. 277: 
LEPTONEMA FASCICULATUM Reinke, Atlas Deutscher Meeresalgem, 
13, A 38. 
The filaments resemble those of a small Elachista, and grow in 
similar tufts, branching only at the base, where are sttuated the 
ovate unilocular sporangia. The plurilocular sporangia, which fom 
the principal characteristic of the genus, may be formed from any 
of the intercalary cells, but occur mostly in the upper part of the 
filament; the cell grows ina direction at right angles with the 
length ofthe filament, forming rather few-celled, usually pointed 
sporangia. Found at Spectacle Island, Penobscot Bay, Maine, Sep- - 
tember 2, 1894, growing on Rhodymenia palmata Grev., in a tide 
pool ; a form corresponding to var. majus Reinke, |. c., the abut” 
dant sporangia occurring through the whole length of the nearly 2 
straight filament, and pointing in all directions. e 
