411 
plurilocular sporangia (b), which latter have not been found on 
Ed. pycnocarpus. 
I have also come across plurilocular sporangia occurring on 
rhizoids such as were observed by Sauvageau (1. c.). They are 
found on the basal rhizoids, especially of the older plants. 
Fig. 71. Ectocarpus fasciculatus (Griff.) Harv. Forma, a portion of a plant with unilocular sporangia; 
b branch with plurilocular sporangia; c cell with chromatophores. a and b 160: 1; c 200: 1. 
This species is most commonly met with on exposed coast 
especially in the littoral zone near low-water mark and in the 
sublittoral in shallow water. It is quite a common epiphyte, espe¬ 
cially on old Himanthalia lorea, Alaria esculenta, Laminaria digitata 
and other larger algse growing between tide-marks. Plurilocular 
sporangia occurred in May, June, July and November and uni¬ 
locular sporangia in May and June. 
