108 
9. Chantransia stricta sp. nov. 
Discus basalis unistratosus e filis lateraliter confluentibus compositus. Fila 
erecta pauca e centro disci egredientia simplicia vel subsimplicia, stricta, usque ad 
1 mm. et ultra longa, 6—7 crassa, ramulos sporangiferos per totam fere longitudi- 
nem gerentia; cellule 3—4,5 diametra longæ, chromatophorum parietale, pyrenoide 
instructum continentes. Ramuli sparsi, nonnunquam secundati, erecti, uni—bicellu- 
lares, monosporangia 2—3 gerentes, nonnunquam piliferi. Sporangia anguste ovata, 
(12—) 13—14  longa, (5—)6—7 y lata. 
r This species is characterized by its straight 
| erect filaments which are unbranched or bear- 
a ing at most a single branch of the same kind 
\ | as the principal filament. The direction of 
\ this is usually not at all influenced by the 
NE numerous lateral fertile branchlets, one of 
which is usually placed on nearly every one 
a of the cells from the base to the top. The 
> branchlets are situated on all sides of the 
filament, but not infrequenily a number of 
Ph 7 (i consecutive branchlets are placed on the same 
Ul! Fw side (fig. 36 C). Most of the branchlets are 
An LY unicellular and bear 2 sporangia, but two- 
QE? \  celled branchlets are also frequent, while such 
al] n 
.h) consisting of more than two cells are rare. 
In well developed filaments sessile sporangia 
Do) [|] do not usually occur, but they may be found 
[8 | in feebly developed filaments (fig. 36 A at left). 
17 N Hairs are often met with at the end of the 
AN I branchlets and marks of decayed hairs are 
RS . 174 Rs visible. The sporangia are rela- 
IN rs tively narrow, twice as long as broad. As I 
SN j} have only had occasion to examine a small 
oo IV number of dried specimens, ! cannot give 
Fig. 36. any information on the development of the 
Chantransia stricta. A. lower part of a plant. B, frag- 
ment offthe middlemosi part, and C, the upper part basal layer. 
of the same plant. 30:1. As far as I can see, this species cannot 
be identified with any of the more exactly described species. The nameless spec- 
ies described by Rernscu (Conirib. ad Alg. et Fung. 1877 p.38 pl. XII fig. 1—2) which 
also has unbranched filaments, (setting aside the branchlets) differs among other 
things by its much smaller dimensions, shorter cells, less erect branchlets and more 
roundish sporangia. 
Only found in small quantity together with other species of Chantransia on 
Polysiphonia nigrescens in depths of 7,5 to 11,5 meters, in July and August. 
Localities. Km: BH off Gjerrild Klint. — Ks: D, N. of Isefjord. — Sa: AH‘ off Fyens Hoved. 
