34 
filaments joining, adjacent cells of one filament unite together to com- 
plete the process. The uni 
“There is still another method of conjugation—the so-called 
Genuflexuous—in which, instead of a connecting tube being formed as 
enveloped in membrane, which Vaucher, Decaisne, and Jenner re 
as the true spores, but which Agardh declares resolve themselves 
erroneou ] d 
rest, and termed a zygospore—Cooke, l.c. 
MOUGEOTIA, Ag. 
h axile chlorophyll-plates. | Copulation ladder-like. 
Cells wit 
Zygospore drawn together in the swollen, bladdery, persisting middie 
space.—Cooke’s British Freshwater Alge, 99. 
M. letevirens, (A. Br.) Wittr, Prof. Moebius remarks :—“ Only a 
short conjugating pair of filaments was found. The zygote lay m the 
conjugating canal, was 40 p» in height and 45 y» broad; the vegetative 
cells were 22 4 broad—dimensions which agree with those of the 
nn This species is representative of the section Craterosperm” 
Fig. 23 is Wittrock and Nordstedt’s figure of the var. varians. 
Hab.: Burpengary, Thos. L. Bancroft, Also in Europe and North Amerie 
ZYGNEMA, Kuetz. 
Cells with two axile, many-rayed, chlorophyll bodies standing neat 
the central cell nucleus, each uite 
; , containing a starch-granule, oF 4 
filled with dense granular contents, vaMoendinis two starch-granul 
like, or lateral bet 
Freshwater Alge, 76. Pe oe ane Sone thread.—Cooke 
eT Se oe 
Fe eg ee Ee Lee, SE Poe Lo a pies Ce nae Oe ete pra Oe Te ae 
