139 
The main filaments were in my specimens 6—9 » thick near the base; they 
are repeatedly branched. Opposite branches sometimes occur (fig. 65 D). The 
branches are tapering upward, finally only 3,5—4 » thick. The cells of the main 
filaments are usually 4—7 times as long as broad. As shown by Kyrın, the chro- 
matophores have almost the same shape as in Ch. efflorescens; they may also con- 
tain small refractive bodies which are possibly pyrenoids. 
The sporangia-bearing branchlets are sometimes composed of more than 3 
cells and transitions to longer filaments may then occur. Sometimes the sporangia 
may also be terminal on long filaments (fig. 65 A). The sporangia are always mono- 
sporous; after the evacuation a new 
sporangium is often formed within the f) 1 Oe | 
emptied membrane. In some cases the N AL" 
sporangial wall was distinctly lamellate, ne NN ey 
consisting of two layers at least (fig.65 A, B) \ H/ M 
in other cases this could not be observed. | i | | 
The sporangia were in the Danish spec- H is |] 
imens 10—14 » long, 5,5—7,5 y, most H | | 
frequently 7# thick. | |] 
The species has been found in depths H a | 
of 13 to 24,5 meters, growing on Phyllo- PEN) 
phora Brodici, Desmarestia aculeata, Bucci- SÆBE 
num undatum and Flustra foliacea, in June 
and July. 
Localities. Ke: VZ, Groves Flak. — Lb: 
Fænø Sund and N. and W. of Fænø. 
PB, cimbrica var. nov. 2 É = E : 
Chantransia pectinata. From Little Belt near Fæno. A, 
Filis principalibus erassioribus in- end of long filament with terminal sporangium and late- 
3 2 au 2 5 ral sporangia-bearing branchlets. B, 4-celled sporangia- 
ferne 8—10,5 4 Crassis, Sporanslis partim bearing branchlet. C, lower part of erect filament with 
3 =) re ” sær descending and horizontally outgrowing filaments. D, 
[ES DOTS 18 19 2 lougis, 10,5 13 u erect filament with opposed branches. E, fragment of 
latis, partim monosporis, 11—13 longis, a filament of the basal layer with erect filament. A. B, D 
: 20:1. C 560:1. E 350:1. 
6—8 yp, latis. 
In the Skagerak a Chantransia was found in May, growing on Flustra foliacea, 
which differed from the typical Ch. pectinata by thicker filaments and by the pre- 
sence of tetrasporangia, but for the rest resembling the latter so much that it must 
be considered as a variety or form. Some specimens were almost the same as the 
typical species or only differing by a little thicker filaments, having the typical 
seriate sporangia-bearing branchlets with monosporangia. But others showed less 
numerous fertile branchlets bearing at most 2 sporangia, which were larger than 
the others and containing 4 spores. As I have had very scarce material I cannot 
say if the two kinds of sporangia may occur in the same individual. At all events 
18" 
