THE COMMON HART'S-TONGUE FERN. 145 
W. Highlands.—Argyleshire : Poltalloch, G. P. London. Isles 
of Islay, Cantyre, and Skye. 
N. Highlands.—Sutherlandshire, not common, Dr. Murray. 
N. Isies.—Isle of Ronsay, Orkney, rare, R. Heddell. Shetland. 
Uister.—Antrim : Colin Glen, Belfast, Donegal, R. Barrington. 
Connaught.—Arran Isles. Galway: Connemara; Gort. Sligo: 
in the neighbourhood of the town of Sligo, abundant, H. Newman ; 
Lough Gill, R. Barrington. Leitrim: Manor Hamilton, R. B. 
Mayo: Westport, R. B. 
Leinster.—Dublin : near Carrickmines, R. Barrington. Louth : 
Townley Hall, C. L. Darby. Wicklow. King's County. Kilkenny: 
Kilmoganny, J. R. Kinahan. 
Munster.—Cork. Kerry: Mucruss, Killarney, abundant, E. New- 
man. Waterford, J. R. Kinahan. Tipperary, J. R. K. Clare: 
Black Head, R. Barrington. Limerick. 
Channel Isles.—Jersey. Guernsey. 
The northern limit of this Fern is reached, according to Fries, in 
Gothland, an island of the Baltic, the Scandinavian peninsula being 
avoided ; but it occurs in some of the central provinces of European 
Russia, and thence through the countries of central Europe, .e.g. 
Great Britain, Holland, Belgium, France, Switzerland, and Ger- 
many, to Spain, Portugal, Italy, Dalmatia, Greece, and Turkey. In 
Africa it is found in Algeria, and in the Atlantic Islands of Madeira, 
and the Azores. In Asia it occurs, according to Ledebour, in the 
Caucasus, on the Siberian side of the Ural Mountains, and in Tur- 
comania ; and itis also found in Asia Minor, at Erzeroum, and in 
Northern Persia. In the Hookerian collection is a specimen doubt- 
fully labelled, from Kumaon. The species is indigenous to the 
Northern United States, but is there apparently rare. The Scolo- 
pendrium Lindeni of Hooker from Mexico, seems to differ only in 
its narrowed fronds, having the same strap-shaped outline, entire 
margin, cordate base, and shaggy stipes and midrib, as in the com- 
mon European plant, of which it may perhaps be regarded as a 
diminished variety. The Scolopendrium Hemionitis and. sagittatum 
of the south of Europe, though generally held distinct, may be only 
marked varieties of the common Hart's-Tongue ; indeed, if these are 
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