139 
non superantes, raro pilum paullo evolutum porlant. Sporangia in apice filorum 
radiantium singula vel rarius bina, immersa, superficiem hospilis non vel vix su- 
perantia, monospora, oblonga, long. 15,5 —18 y, lat.9 y. 
This species was found only once in dried specimens of Polyides rotundus 
collected in the Northern Kattegat in September. In mode of growth it reminds 
one somewhat of Ch. immersa from which it is distinguished in particular by the 
form of the chromatophore. It does 
not occasion any deformation of the 
host plant in the intercellular sub- 
stance of which it lives. It grows 
principally in a radial direction but 
has also stoloniform filaments grow- 
Nenn 
| 
\ J 
Ÿ | 
ù N 
ing out in a transverse direction | À CN 
and giving off new radiating fila- | I: 
ments (fig. 59). The filaments are A en B 
ig. 59. 
as a rule fairly strongly branched, Chantransia Polyidis. A, radiating filament with fasciculated 
however, one branch only is given branches. B, transverse section of Polyides with Chantransia 
N showing transverse and radiating filaments. 300:1. 
off from each joint, and some cells 
bear no branch. Sometimes the branches are fasciculated in the radial filaments 
(fig. 59 A). The cells are usually somewhat swollen; at some distance from 
‘ the surface very thick cells, over 20 broad, 
may frequently be met with. Hyaline hairs 
seem to occur only in very small quantity 
and feebly developed. The end-cell shown in 
fig.60 B is. probably a young hair which has 
not yet reached above the surface of the host. 
As I possess only dried material I cannot 
give a sufficient account of the structure of 
the chromatophore, which seems to be rather 
peculiar. In the end-cells the chromatophore 
appears often as a compact mass filling out 
the greater part of the cell, in the centre of 
which a body is visible which seems to be a 
Fig. 60. 
Chantransia Polyidis. A, radiating filament show- 
ing the chromatophores. B, end of filament the pyrenoid (fig. 60 A). In the somewhat older 
end-cell of which is apparently about to form a h hr Oh ft L an 
hair. C, branched filament with partly emptied cells the chroma opnore shows O ten an upper 
sporangia. D, end of filament with terminal spor- dome-shaped part while the rest of it is divided 
angium. À 390:1. B—D 300:1. 2 i 
into a number of strands or plates, concerning 
which I am not able to decide if they are all continuous or partly separate. The 
dome-shaped part soon disappears and the supposed pyrenoid was also as a rule 
not visible in the more developed cells. The whole process has apparently the char- 
acter of a vacuolization of the chromatophore. 
The sporangia are terminal on the outward growing filaments. Besides the 
