Teema 
EPICLADIA 225 
branched filaments. Chromatophore a homogeneous parietal layer 
inclosing a pyrenoid. 
Reproduction by means of zoospores (gametes ?) of which many 
be formed in a cell and escape through a round hole in the cell- 
well. 
Type (and only species) Æ. fustrae Reinke. Inhabitant of 
salt water. [Etym. iz, upon, and xłáðoç, branch. 
This genus is closely related to Exdoderma, from which it differs 
in its non-endophytic habit and in its greater tendency toward the 
formation of an expanded thallus. Here the plate of cells is central 
and in some sense primary, while in Zrdoderma it is only accidental, 
that is, resulting from the coalescence of vigorously growing fila- 
ments. Zpicladia thus seems to furnish a point of connection with 
the genus Monostroma in the Ulvaceae. 
I. EPICLADIA FLUSTRAE Reinke, 4 c. 
Cells of the central plate irregularly polygonal in outline, 7-12 
yin diameter [12-20 ,م‎ Reinke], those of the free filaments short- 
cylindrical or irregular, 5-10 in diameter (al 42, f. 2). 
Exsic.: Phyc. Bor. Am, 760, Spectacle Island, Penobscot 
Bay, Maine, July, 1893 (F. S. Collins). 
Growing on Flustra, Sertularia, and other bryozoa, often 
among the masses of Fucus between tide marks. 
New HAMPSHIRE : Hampton, July, 1884 (F. S. Collins). 
MassacuusETTS: Nahant, July (451); April, 1892 (F. S. Col- 
lins). 
New York: Pelham Bay, May (408, 582). 
We have been unable to find this plant in New York waters in 
summer and autumn. 
VI. ENDODERMA Lagerheim, Ofvers. Vet. Akad. Förhand. 
1883’: 74, 75. 1883. Huber, Ann. Sci. Nat. Bot. VII. 16: 
313-326. pl. 14, 15. 1892. 
Entocladia Reinke, Bot. Zeitung, 37: 476-478. pl. 6. 1879. 
Not Endocladia J. Ag. Linnaea, 15: 449. 1841. 
Reinkia Borzi. Notarisia, 3: 448. 1888 [women nudum]. 
Periplegmatium Hansg. Flora, 72: 58, 59. 1889. Not Kitz. 
Phyc. Gen. 273. pl. 7. f. 3. 1845. 
