FLORA OF THE OUTER HEBRIDES 63 



Seolopendrium vulgare, Symons. — Scarp, Harris, IV. S. Duncan. 



Lastrea semula, Brackenbridge. — Scarp, W. S. Duncan. 



Phegopteris polypodioides, Fee. — Harris and Scarp, W. S. Duncan. 



Ophioglossum vulgatum, L. — North Rona, Barrington. Benbecula, 

 Dr. Stir ton. 



Ophioglossum vulgatum, L. ; var. polyphyllum, A. Br. — St. Kilda, 

 Barrington. 



Botryehium Lunaria, Sw. — St. Kilda, Barrington. Scarp, W. S. 

 Duncan. 



Equisetum pratense, Ehrh. — Obbe, Harris, W. S. Duncan. 



Equisetum arenarium, Neivman. — Links of Scaristra, Harris, W. 

 S. Duncan. 



Lyeopodium annotinum, L. — Authority? 



Isoetes laeustris, L. — Scarp, IV. S. Duncan. 



Pilularia globulifera, L. — Frequent about Obbe in Harris, IV. S. 

 Duncan. 



Chara fragilis, Desv. — S. Uist, A. So7nerville. var. barbata (Gant.) 

 — S. Uist, Somerville. 



Chara hispida, L. — S. Uist, A. Somerville. 



Nitella translueens, Agardh. — Harris, 1889, Mrs. W. S. Duncan. 



Nitella opaea, Agardh. — Harris, Duncan. 



Nitella batraehosperma, A. Br. — Loch near Obbe, Harris, JV S. 

 Duncan. This is the only station at present known in Great 

 Britain. It was discovered here by Mr. Duncan in July 18SS, 

 and was' sent to me by the finder, through Mr. F. C. King. 



Balfour and Babington's estimate of the Flora was 349 

 species and varieties (without Characece). This present list 

 adds 143 species and varieties (without Characcce) making a 

 total of 492 at present known. To this I think it probable 

 that at least 50 or 60 species will be added and eventually 

 found to occur. 



It would extend this paper too much to give the 

 additional localities for a large number of the species in 

 Balfour and Babington's list, so I only give a few interesting 

 notes on some. But I wish it to be understood that I 

 consider I merely hold these materials " l\\ trust " until some 

 Scottish botanist will undertake a Flora of the Islands, when 

 I shall be pleased to hand over all the material I possess. 

 Unless otherwise stated, the notes are by Mr. Duncan, who 



