126 BYNOPSIfl OF BRITIsif BBAWBED8. 



•ia papillaris, .///. GHgartina capillaris, Lamomr, Gh hi- 

 brica, Lyngb. Fucus capillaris, J I nds. 



1 to submarine rocks, growing in tide-pools, near low- 

 mark : frequently east on Bhore from deeper water. Annual. 

 Bummer. 

 A highly beautiful plant, nearly related in affinity to the 

 genus Dudresnaia, but, according to the views of the 

 bite Captain Carmichael, of Appin, forming the type of a 

 separate genus, which differs from Dudresnaia chiefly in 

 haying a tubular axis. The structure, as seen by the mi- 

 croscope, is very beautiful, and such that it is impossible 

 to do it justice in drawing, the extreme lubricity and 

 transparency of the parts being lost in a lithograph. The 

 whole plant is very tender, and invested with a gelatinous 

 pellicle, and each filament of which it is composed stands 

 separated from its neighbour, by a similar coating. 



G-loiosiphonia capillaris is rather uncertain in its appear- 

 ance, being found in some seasons in considerable plenty 

 and not occurring again, sometimes, for several years. 



LXXYII. NEMALEOX. 



218. multifidum (The many-slit L Xenial eon) ; frond dichotomous, 

 slightlv branched, dull purple; the axils rounded, /. Ag. in 

 Unnaa, v. 15. p. 453. (Atlas, PL XLVI. Fig. 210.) 



Mesogloia multifida, Ag. M. Balani, Carm. Chordaria multi- 

 fida, Lyngb. Chsetophora multifida, Hook. Kivularia mul- 

 tifida, Web. et Mohr. Helminthora multifida, Ktz. Nema- 

 leon lubricum, Duly ? 

 II ah. Common along the western shores of Scotland and Ire- 

 land. On rocks, Balani, and shells (frequently on Mytilus 

 rugosus), near low-water mark, in exposed situations. 

 This plant, which is found on most of the rocky shores 

 of Europe, occurs in considerable plenty on our western 

 shores, growing near low-water mark, either on the bare 

 rocks or on shells attached to them ; and generally in 

 situations where it is exposed to the air for a few hours, 

 and at the same time subject to be lashed by the waves. 

 Except in the degree of ramification, it has no varieties. 



219. pnrpureum (The purple Nemaleon); stem undivided, at- 

 tenuated at base and apex, set with numerous, irregularly 

 inserted, elongated, simple, tapering branches, which are 

 either naked, or furnished with a second series of similar 

 branches, Chauv. M. p. 57. (Atlas, PL XLVIII. Fig. 2G1.) 



Mesogloia purpurea, Harv. Dumontia Calvadosii, Lamour. 



