THE HIGH ALPINE FLORA OF BRITAIN 39 



among the loose boulders on the summit of Beenkeragh (Hart, 1881, 

 in "Proc. Roy. Irish Acad." 1882, p. 578). Descends to 92 m. in 

 Antrim (Rev. C. F. D'Arcy). 



Syn. Trichomanes peltatum, Poiret (1808); Hymenophyllum uni- 

 laterale, Bory (1810); H. Wilsoni, Hook., "Brit. Fl." (1830). 

 First recognised as a British fern specifically distinct from H. Tun- 

 bridgense by Wm. Wilson, who compared the two plants growing 

 together near Killarney in 1829. Hooker says, in the work cited, 

 " No one, I believe, was aware of their real differences, till Mr. W. 

 Wilson found them both growing at the Lakes of Killarney, and 

 distinguished them specifically." Wilson himself contributes a note 

 on the two plants in "Journ. Bot." 1834, p. 317. Whether the 

 plants known under the other three names exactly agree with the 

 Irish fern I must leave fern-specialists to decide, but I give by con- 

 trast the differences in the original descriptions. Desvaux says that 

 the plant described by him is identical with those described by 

 Poiret and Bory, but that does not dispose of the claims of the 

 Irish fern. Trichomanes peltatum was first found in Mauritius, and 

 H. unilaterale shortly afterwards in the island of Reunion. Further, 

 Messrs. Groves query the identity of Bory's fern with the Irish plant 

 distinguished by Wilson (see Bab. "Man." ed. 9, 532). However, 

 pending further inquiry, I have given the name which occurs in the 

 three recent British Lists ; though I think that Messrs. Groves have 

 some grounds for inferring that the Mascarene fern may not be 

 identical with that from Killarney. 



T. peltatum. Rhizome fibrous ; fronds lanceolate ; pinnae pin- 

 natifid ; pinnules dentate. 



H. unilaterale. Rhizome filiform ; fronds linear-lanceolate ; 

 pinnae digitato-pinnatifid ; pinnules serrate. 



H. Wilsoni. Rhizome capillary ; fronds narrowly oblong ; 

 -pinna; pinnatipartite ; pinnules spinously serrulate. 



As far as ferns vary, the last seems somewhat different. 



Note. The " Herb. Brit." frequently mentioned is the separate 

 British Herbarium in the Botanical Department of the Natural 

 History Museum, London, S.W. 



PLANTS OF SOME SOUTHERN SCOTTISH 



COUNTIES. 



By G. CLARIDGE DRUCE, M.A., F.L.S. 



IN August last I visited for a short time the interesting 

 headland known as the Mull of Galloway in Wigtownshire, 



