The Scottish Naturalist. 



39 



Isoetes lacustris L. var. falcata Lange. — Tingwell Loch, 

 1887 (t. Lange) ; where the type also occurs. The plant recorded 

 from Loch of Watlee, Unst, must be referred to this variety, which 

 it represents in a much more extreme state than does the Tingwall 

 plant. 



Chara fragilis Desv. var. delicatula A.Br.— Lower end of 

 Tingwall Loch. (t. Groves). 



X 0. vulgaris L. — Ditch running into the upper end of Ting- 

 ^wall Loch. 



CONTRIBUTIONS TOWARDS A PLORA OF CAITHNESS- Continued. 

 By. J. F. Grant and Arthur Bennett, F.L.S. 



Lapsana communis. 



Roadsides, common. 

 Crepis virens. 



Roadsides and railway embankments, rather local. 

 C. paludosa, 



Damp subalpine situations ; Wick and Thurso rivers ; Lybster. 

 Hieracium Pilosella. 



Dry ground, common .; Wick river. 

 H. anglicum. 



Thurso river, beside the railway ; Yarrows Hills. 

 H. iricum. 



Thurso river ; Dunbeath water. 

 " H, pallidum." 



Yarehouse Hills, near Yarehouse ; Dunbeath Strath • Ben 

 Dorrery. Dr. Davidson. 

 var. Schmidtii. 



A specimen from Caithness was so named by Dr. Almquist. 

 H. argenteum. 



Bemedale Water. F. J. Hanbury ! 

 H. murorum. 



Reay and Sandside Burns ; Acharole Burn ; Thurso River ; Reis- 

 gill Burn. 



H. caesium, var. Smithii Baker. 



Banks of Thurso River, near the Cemetery. 



