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pretty little stellate tufts, which are sometimes so abundant as to 

 become confluent, and occasionally extend their domain over the whole 

 of the frond, giving it quite a shaggy appearance. At other times the 

 tufts are minute, dot-like, or partly so, and are thinly scattered, some- 

 what like the fruit of Punctaria, but diff"ering widely under the 

 microscope. 



The only other plant with which the present can be confounded is 

 Elachista fucicola, which sometimes asserts its right to colonise in the 

 same locality, but the uniformity in the length of the fronds will at a 

 glance distinguish the present species, together with the knob-like base 

 of the Elachista. 



, ,-rt^a 



LITOSIPHON LAMINAR!^. 



EXPLANATION OF DISSECTIONS, &c. 



Fig. 1. — Tufts oi Litosiphon Laminarice, on Alaria esculenta, natural size. 

 2. — Same. 



3. — Apex of a frond. 

 4. — Semisection of same. 

 5. —Surface cells. All magnified. 



