165 



Sporangia plurilocularia plerumque axillaria, sessilia, dense 

 aggregata, conico-elongata, magnitudine variabili, minora = 40^ 

 long, et 24/^ lat., majora = 110// long, et 40 fi lat., plerumque 

 1 — 3, rarius plura aggregata. Sporangia unilocularia ovata. Chro- 

 raatophora disciformia numerosa in cellulis prsesentia. 



The plant is fixed to the substratum by means of short 



Fig. 131. Ectocarpus coniferus nov. spec. 

 Part of a plant with plurilocular sporangia. (About 60 : 1). 



rhizoids growing out from the lowermost cells in the filaments 

 (Fig. 132 e). 



The main filaments are about 40// thick consisting of cells 

 from nearly V2 to 3 — 4 times longer than broad. The lengthening 

 of the main fdaments is mostly restricted to limited intercalary 

 growing-points which occur near the insertion of a branch (Fig. 132 a) 

 but now and then, also, a single cell here and there in the fila- 

 ments may start to divide. All the filaments and lateral branches 



