1858.] FERNS OF ABERDEEN AND KINCARDINE. 333 



IV. Aquatic plants. — Ceratophyllum clemersum, Stratiotes 

 aloides_, Sagittaria sagittifolia^ Potamogeton densvis and lucens^ 

 Lemna trisulca. 



V. Plants which cannot conveniently be placed in any of the 

 above divisions. — Chelidonium majuSj Reseda lutea, Trifolium 

 fragiferuiia^ Onobrycliis sativa^ E-osa arvensisj Saxifraga granu- 

 lata, Silaus prateusis, Pastinaca sativa, Torilis nodosa, Gentiana 

 Pneumonantlie, Cuscuta Trifolii, Verbena officinalis, Ballota 

 nigra, Marrubium vulgare, Cynoglossum officinale, Humulus 

 Liipulus, Orchis Morio and ustulata, Typba latifolia, Hordeum 

 pratense and niurinum, Lycopodium inundatum and alpinum. 



In conclusion (and by way of apology for myself) I would 

 venture to suggest a question on the much- vexed subject of 

 " common plants.^^ Instead of setting to work in good earnest 

 and comparing our lists, do we not rather indulge in a little fa- 

 vouritism ? Each one has his pet plants, which he would fain 

 consider as uncommon, and thus we lose (what after all are most 

 valuable) good dry statistics. If some one in each district would 

 forward to the ' Phytolcgist ' those in your List of Common 

 Plants which he has not observed, we should soon come to a satis- 

 factory conclusion on the subject. 



THE FEENS OF ABERDEEN AND KINCARDINE. 

 By W. Sutherland, M.A. 



Polypodium vulgare, L. Abundant over the two counties, in 

 all favourable situations. — Although much variation is observable 

 in different plants, none of the very marked and named varieties 

 have as yet been detected. 



Polypodium Phegopteris, L. Rare in Kincardineshire, as it 

 does not include much of the mountainous districts, in the 

 parish of Strachan, and in the Corbie Den (?) ; it is however 

 quite common in the alpine and subalpine districts of Aberdeen- 

 shire. 



Polypodium Dryopteris, L. Common in woods, heaths, and 

 stony places. 



Polypodium alpestre, Moore. By no means rare on the higher 

 mountains of the Braemar district, or at the foot of that gully. 



