38 ANNALS OF SCOTTISH NATURAL HISTORY 



islands of the Inner Hebrides to the north of it in the 

 common occurrence of certain species which have a preference 

 for limestone, and in the scarcity of those preferring peat. 

 To the former cause is due the abundance of Nasturtium 

 officinale, R. Br., and Asplcniuui Ruta-nmraria, L., the 

 occurrence of Scolopendrium vulgare, Symons, as a common 

 plant, and the presence of Helianthemum Chaincecistus, 

 Mill., which is not uncommon. It is more difficult to speak 

 with certainty of the absence of certain peat plants without 

 a more prolonged examination than I was able to make, 

 but several of the common species which especially affect 

 this soil were not seen. 



I am indebted to Messrs. W. H. Beeby and Arthur 

 Bennett for kind help with Sparganium and Potamogeton, 

 and to Messrs. H. and J. Groves with Characece. 



An asterisk denotes a new record for v.c. 98, in which 

 vice-county Lismore is included. 



*RANUNCULUS DROUETII, Godr. (confirmed by Messrs. H. and J. 

 Groves). Rare ; stream at Loch Fiart. This species has also 

 been found in the islands of Islay, Tiree, and the Outer 

 Hebrides. 



'ARABIS CILIATA (?) This puzzling plant occurs in small quantity 

 on rocky banks at Achnacroish. I had previously gathered it 

 in 1896 in Coll and Tiree, and it was referred to this species, 

 but with some hesitation, by Mr. Arthur Bennett and by the 

 Rev. E. S. Marshall. I lately sent specimens from the three 

 localities to the British Museum for an opinion. In reply, Mr. 

 [. Britten kindly wrote that they could not come to any 

 definite conclusion about the plant. He was inclined to think 

 that the two species \A. hirsuta and A. ciliata] were too closely 

 allied to be tenable as species, and mentioned, " Your plant 

 has not altogether the appearance of the Renvyle plant, of 

 which we have two good sheets from Shuttleworth that is 

 smoother and slender, but I do not find any character by which 

 to distinguish it. Syme's character from the shape of the seeds 

 does not seem to hold good. Your plant is quite the same as 

 one gathered by Mr. Shoolbred in North Uist last July." The 

 Scottish plant would, I suppose, rather come under the var. 

 hispida, Syme, if it were distinct from A. hirsuta. 



HELIANTHEMUM CHAM^CISTUS, Mill. Not uncommon. Mentioned 

 by Lightfoot in " Flora Scotica," under Cistiis helianthemum, as 

 seen by him during his short visit to this island. 



