Fig. 39. STILOPHORA LYNGBY^I. 



Colour. A pale olive-brown_, or foxy; becoming greenisli olive in drying. 



Suhstance. Membranaceous; crisp at first and fragile_, soon turning soft. 



Character of Frond. Tliread-sliaped [filiform), tufted^ branched. Brancliing 

 profuse, almost always forked {dlchoto-mous) ; spreading; the tips very 

 fine. 



Measurement. From 2 to 4 feet long, or more. 



Fructification. Minute seeds [spores) in convex, wart-like clusters, in lines 

 encircling the branches; not nearly so thickly set as those of S. 

 rhizodes. 



Habitat. Land-locked bays on the coasts of Scotland and Ireland; dredged 

 in from 4 to 10 fathom water. 



8. rhizodes always grows within tide-marks. S. Lyaghyoel is only obtained 

 from deep water. Dr. Harvey doubts of their being two distinct species. 



Fig. 40. DICTYOSIPHON FCENICULACEUS. 



Colour. A greenish or brownish olive, according to age. 



Sahstaiice. Membranaceous; soft; slippery to the touch when young, yet 

 not gelatinous. 



Character of Frond. Thread-shaped {filiform), tufted very fine. Very much 

 branched and bushy. Main stem set with long, alternate branches 

 on each side; branches re-branched once or twice; becoming hair-like 

 at last. When young covered with colourless cobweb-like hairs, which 

 die ofi" afterwards. 



Measurement. From 1 to many feet long. 



Fructification. Minute seeds [spores) either solitary or clustered; scattered 

 over the surface of the frond. 



Habitat. Our coasts generally. Between tide-marks in pools, on rocks, or 

 on other Algae. 



In general appearance like Desmarestia viridis, but the exactly opposite 

 brancliing of that, and the alternate of this, perfectly distinguish the one from 

 the other. The slippery feeling of young plants is produced by the hairs. 



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