408 
The specimens collected bore almost exclusively unilocular sporangia. 
These were ovate, roundish-oval, sometimes sessile, sometimes borne 
on quite short unicellular stalks; they sometimes sprang directly 
Fig. 69. Ectocarpus spec, a, b, c, d, e and f different parts of the plant with unilocular sporangia; g and 
h part of the plant with plurilocular sporangia, a, b, d and g 100 : 1; c 60 : 1; e, f and h 160 : 1. 
from the main filament, sometimes from branchlets. Both the 
branchlets and the sporangia occur all round the main filaments. 
The unilocular sporangia are about 38 g long and 29 g broad. Here 
and there a few plurilocular sporangia occur (fig. 69, g , h) with the 
base almost ovate and tapering upwards, the length about 75 and 
the breadth 21 g. 
