J)ict?/otea.'\ asperococcus. 149 



were with hini; helped ourselves as liberally, and yet much 

 of it was left in the pool. I looked in vain for it, however, 

 the succeeding season. The specimens were very good, 

 about six inches in length, and nearly an inch in breadth ; 

 better fitted for the herbarium than gigantic specimens of 

 it, found in Ireland by Mr. AYilliam Thompson, three feet 

 and a half in length, and two inches and a half in diameter ! 

 See a very good figure of it with fruit, &c., in Phyc. Brit., 



PI. XI. 



3. AsPEROCOCCus ECHiNATUS, GrevUle. 



Hab. Eocks in the sea. Common. Annual. Summer 

 and autumn. 



This is not so beautiful a plant as the preceding. It is 

 much darker in colour, and generally much smaller, at least 

 in diameter. I have, however, seen it betwixt two and 

 three feet in length ; this was in the island of Arran, 

 where it had a tomentose appearance in the water, as if the 

 frond were woolly. The same thing seems to have been 

 observed by Captain Carmichael on Asperococcus {^) pisillus, 

 " beset," he says, " with pellucid fibres so closely covering 

 the frond on which they grow, as to give it the appearance 

 of a bottle-brush."'^ This appearance was very remarkable on 

 the very large specimens which I saw in Arran ; but as tliey 



