Marine Algae of Berwick-on-Tweed. 233 



ALG^l INCERT^E SEDIS. 



GONIOTBICHUM (Ktz.) 



Q-oniotrichum elegans, (Chauv.) Zanard. 



Notiz. p. 69 — Bangia elegans, {Chauv.) Mem. Soc. Linn. 

 Norm, vi., p. 13. 



Descr., Fig. Bangia elegans, ffarv., Phyc. Brit. pi. 246. 



Ewsicc. „ „ Chauv., Alg. Norm. vn. no. 159. 



Syn. Goniotrichum elegans, "Ann., Icon. Phyc. Adr. ill., p. 67 t. 46a, 



fig. 3, 4 ; J.Ag., Till. Alg. Syst.Vl. p. 13 ; Lejol., Liste Alg. Mar. 



Cherb., p. 103. 

 Goniotrichnm dichotomurn, Ktz., Spec. Alg., p. 65; Ktz., Tab. 



Phyc. hi., t. 27. 

 Hub. On Sphacelaria pi umigera and Sphacelaria radicans. June — Aug. 



Very rare. Berwick Bay. 



I have followed Hanek, who acted on a suggestion of Thuret 

 (vide Le Jolis's Liste, p. 103,) in placing Goniotrichnm next to the 

 Nostochinete, with which it should probably be classed. "The 

 only reproduction known consists in the escape of the cells from 

 the gelatinous sheath and a division into two new cells, then 

 into four, and so on until a new filament is formed." (Farlow 

 Mar. Alg. New Eng., p. 113.) 



This tiny little plant grows in scattered tufts on the fronds of 

 Sphacelaria plumigera and other small Algro. Perhaps it is not 

 so rare as has been supposed, its minute size preventing its 

 detection even when specially sought for. 



G-oniotrichuxi ramosuk (Thwaites) Rauck. 



Meeresalg., p. 519 — Horniospora ramosa, Thwaites, in JIarv. 

 Phyc. Brit. pi. 213. 

 Descr. et Fig. Hormospora ramosa, Harv. I.e. 

 Syn. Goniotrichum coerulescens, Zanard, Icon. Phyc. Adr. in., p. 67, 



tab. 46b. 

 Hab. On Cladophoro: in shallow pools of brackish water along the 



muddy shore at Fenham Flats. Very rare. 

 Except in colour G. ramosum closely resembles the preceding 

 specips. The tufts, however, are smaller, the branching more 

 irregular, and the colour bluish green. My specimens are 

 small, but answer in other respects very well to the figure and 

 description in Phycologia Britannica. 

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