— 144 — 



have found it more irregular, consisting of free, creeping filaments. The 

 plurilocular sporangia are simple or branched, 58 — 100 fx long and 5,8 

 — 7 a broad; in the central portion of the disc they have a 20— 40 u 

 long stalk consisting of 1 — 4 cells, but nearer the margin they are often 

 sessile. The sporangia consist usually of a single series of loculi and I 

 have but seldom observed two series in the middle portion. Some of my 

 specimens were for the most part composed of unbranched, 100—140 a 

 long and 6 — 7 tj. broad, assimilative filaments, the cells of which were 

 twice as long as broad. I have only met with lateral hairs, which some- 

 times were more than 400 fi long. As far as I can judge from my alcohol 

 materia], there is only one chromatophore to be found in each cell. Weil 



Fig. 2. Fig. 3. 



Myrioncma Corunnæ Sauv. 

 Fig. 2. a two branched, sterile filaments, one with a lateral hair, the other with 

 a lateral plurilocular sporangium; b to the left an assimilative filament and a 

 rhizoid consisting of two cells, to the right a stalked plurilocular sporangium. 



(126:1.) 



Fig. 3. a shows stalked and divided plurilocular sporangium and a short rhizoid ; 

 b shows an assimilative filament and two rhizoids, the one of which (to the left) 

 not yet separated from the mother cell with a wall, the other (to the right) 

 consisting of one cell. (316 : 1.) 



developed rhizoids, like those figured by Sauvageau in fig. 14, F (I.e.), 

 are frequent in my material ; they penetrate the sorus and grow inwards 

 between the paraphyses and sporangia of the host-plant. 



My specimens are, as 1 have said before, fully agreeing with Sau- 

 vageau's description and figures (1. c), and they also agree very well with 

 the Færoese specimens mentioned by Börgesen (Fær. alg. p. 426), which 

 were sent to Sauvageau. 



