Cliaiiti-ansia Polyidis 



branches, li . transverse section of Polyides wit 

 showing transverse and ladiating lilaments 



tilanienl with lasciculaled 

 Cliantransia 

 ;iOO: 1. 



fasciculated in the radial filaments 



non superanles, raro pilum paullo evolutum [)orlanl. Sporangia in apicc lilorum 

 radiantium singula vel rarius bina, immersa, superficiem hospilis non vel vix su- 

 perantia, monospora, oblonga, long. 15,5 — 18//, lat.9//. 



This species was found only once in dried specimens of Polyides rotniulns 

 collected in the Northern Kattegat in September. In mode of growth it reminds 

 one somewhat of Ch. immersa from which il 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- 

 ing out in a transverse direction 

 and giving off new radiating fila- 

 ments (fig. 59). The filaments are 

 as a rule fairly strongly branched, 

 however, one branch only is given 

 olT from each joint, and some cells 

 bear no branch. Sometimes the branches are 

 (fig. 59 A). The cells are usually somewhat swollen; at some distance from 



the surface very thick cells, over 20 broad, 

 may fi'equently 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 j'oung 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 

 pyrenoid (fig. 60 A). In the somewhat older 

 cells the chromatophore shows often an upper 

 dome-shaped part while the rest of it is divided 

 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 [)art 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 



Fig. 60. 



Cliantransia I^ulyidis. A. radiatins" tihuiicnl show- 

 ing the clironiatophores. B, end of filament the 

 end-cell of which is apparentlj' about to form a 

 hair. C, branched filament witli partly emptied 

 sporangia. D, end of filament with terminal spor- 

 angium. .1 :»() : 1. B I) '.m : 1. 



