128 ANNALS OF SCOTTISH NATURAL HISTORY 



have resembled the mainland plant with six stamens and long 

 filaments. As the floating form has only occasional chances of 

 flowering, I have examined comparatively few specimens, but the 

 great majority had stamens and length of filaments in the same 

 proportion as the land plant ; though I have noticed on a few 

 occasions three stamens, and filaments and anthers of about equal 

 length. The submerged capillary-leaved form which grows in large 

 masses at the bottom of lochs very rarely has a chance of flowering, 

 but the few examples I have seen in flower have all had six stamens 

 with filaments longer than the anthers. This last form is very 

 unlike a.Junaes. Scirpus fliiita ns, L., which grows in similar patches 

 on the bottom of lochs and stagnant pools, resembles it a good deal, 

 as in such situations it also has long capillary leaves. SYMERS M. 

 MACVICAR. 



Algse new to Scotland (Cyanophyeese and Floridese). In a 



paper in the "Journ. Bot." for January, Mr. E. A. L. Batters notes 

 several additions to the British lists. Those found in Scottish 

 localities are as follows : 



Lyngbya (Leibleinid) Meneghiniana, Gomont. Firth of Forth, 

 opposite Caroline Park, August 1887. 



Phormidium tenue, Gom. Muddy estuary of the Tweed, October 

 1883. 



Ph. ambiguum, Gom. In deep rock pools near high-water 

 mark, Cumbne, August 1891. 



Ph. uncinatum, Gom. In muddy estuary of the Tweed, 1884. 

 Ballachulish in 1885. Muddy estuary of the Tweed, July 1894. 



Ph. persidnum, Gom. On old solen shells dredged from six to 

 eight fathoms, Cumbrae, August 1891. 



Colaconema, new genus. Thallus microscopic, living in cell- 

 walls of algae, of rose-red, creeping, irregularly-branched, jointed 

 filaments, often anastomosing, sometimes loosely united laterally. 

 Monosporangia formed from portions (a) of terminal cells of the 

 principal axes, or () of short, swollen, one-celled or few-celled 

 branches, or (c) of cells in the continuity of the filaments, the un- 

 differentiated basal portions of the cells forming cup-like bases for 

 the sporangia. 



C. Bonnemaisoniiz, n. sp. In Bonnemaisonia asparagoides, at 

 Berwick-on-Tweed. 



Chantransia microscopica, Foslie. On Porphyra, at Berwick-on- 

 Tweed, bearing monospores, cystocarps, and antheridia, in June 

 1895. 



Peyssontielia Rosenvingii, Schmitz. Near low-water mark, Ber- 

 wick-on-Tweed, February 1888. 



The following species, also mentioned by Mr. Batters as new to 

 Britain, though not yet detected from Scotland, should be looked for 

 on our coasts, where at least some of them will be found : Lyngbya 



