242 
THE SEAWEEDS 
Fig. 104 . — Delisea elegans. 
Fig. 105 . — Delisea pulchra. 
Fig. 106 . — Delisea pulchra: a, olant; b , pinnules wUh 
conceptacles at their apices; c, vertical 
section of a conceptacle; d, spores from 
the same; e, apex of a ramulus, with a 
wart (nemathecium) ; f, cross-section 
through the same, showing the structure 
of the frond, and the external growth of 
the wart; g, tetraspores and paranemata 
from the same. (After Harvey.) 
