142 
THE SEAWEEDS 
Fig. 16. — Wrangelia plumosa. 
Fig. 17. — Gelidium australe. 
Fig. 18.— Gelidium glandulaefolium : a, plant; b, part 
of a pinnule, with conceptacles in the 
bristle-shaped ramuli; c, section of a con- 
ceptacle, showing spores attached to the 
medial dissepiment; d, part of a ramulus, 
with tetraspores immersed in the dilated 
ramuli; e, a ramulus, with its sorus of 
tetraspores; f, tetraspores. (After Harvey.) 
