58 



Cellulse subcylindricae, dolioformes, medio plus minus inflates 

 vel interdum magis irregulares, 8 14// latse, ca. 35 fj. longse, chro- 

 matophorum stellare, pyrenoide centrali instructum continentes. 



Pili hyalini terminales, non numerosi, 

 adsunt. 



Sporangia, sessilia aut pedicellata, sin- 

 gula vel interdum bina, globulose-obovata, 

 ca. 20// longa et ca. 14/^ lata. 



This species was found abundantly in 

 Liagora pinnata. It creeps among the assi- 

 milating filaments in the mucilage and 

 chalk coating found here (Fig. 60). 



The filaments are not particularly 

 branched and rather long intervals occur 

 which have no branches at all; in some 

 parts of the filaments on the other hand 

 branchlets are given off from the outer 

 side of nearlv each cell in the filaments 



*/ 



(Fig. 61). Sometimes these branchlets are 

 repeatedly ramified; it also happens occa- 

 sionally that two branchlets arise from the same cell. These 

 branchlets bear the monosporangia, but sessile sporangia placed 

 immediately upon the cells of the main filaments are not un- 

 common. 



Fig. (50. Acrochsetium 

 Liagorse nov. spec. Part 

 of a plant between the 

 assimilating filaments 



of Liagora. 

 (About 120:1). 



Fig. 61. Acrochsetium Liagorse nov. spec. Parts of three plants with 

 sporangia (some ones emptied). (About 75:1 and 200:1). 



The cells in the main filaments are irregular in shape, mostly 

 somewhat swollen in the middle tapering towards both ends; in 

 the middle their diameter reaches a length of about 16 //, at the 

 ends about 8/^; their length varies about 35^. 



The chromatophore (Fig. 62) is stellate with long strands run- 



