
340 THE BRITISH FERNS. 
Leinster.—Dublin: Holly Park, Dublin, S. Foot; Dunsinsk; 
Dodder Valley, Kilnasantan, J. R. Kinahan. Wexford: Rathoor- 
mack, 7. Barry. Meath, G. A. Pollock. 
JMunster.—Cork: Clonmel, “found several years since by Mr. R. 
Davis? "Tipperary: Annagh Inch, along Little Brosna and Pallas 
Rivers, J. .R. Künahan. Kerry: Beginnish Island, Lough Kay, 
Valentia, J. R. K. 
This species is dispersed over nearly the whole of Europe, 
from the Scandinavian territories, and Russia, through Holland, 
Belgium, France, Switzerland, Germany, Spain, Italy, Dalmatia, 
Croatia, Hungary, and Transylvania, to Bosnia in European 
Turkey, and the Crimea (Tauria). In Asia, it occurs in the 
Caucasus, in the East Indies, in Siberia, in the Ural region, and 
in Kamtschatka and the island of Unalaschka. Brackenridge 
records Madeira. Itis further met with in various parts of North 
America and in Mexico; and according to the Hookerian Herbarium 
in New Zealand. The O. costatum including O. elongatum, of New 
Zealand, New Holland, and the Cape of Good Hope, is but doubt- 
fully distinct from this species, except as a variety, differing more 
in the presence of a central costa, than in aspect or external 
Structure. 
Though of similar habit to the Botrychium, this plant is more 
readily cultivated. For this purpose the plants should be taken up 
without having their roots broken, in sods of the soil in which they 
naturally grow, and should be planted in similar soil, in any 
moderately exposed situation, where the roots may be moist and 
cool, but not liable to excessive wetness. A soil of a loamy 
character and rather stiff is generally preferred. It is one of those 
plants which seem to derive benefit from the shade of surrounding 
herbage such as accompanies it in its native pastures, and in con- 
sequence * gardenesque' neatness is inimical to it; but we cannot 
at all adopt the notion of Mr. Newman, that the Adder's Tongue is 
parasitical on the herbage with which it is associated. 
. According to Gerarde, *the leaves of Adder's Tongue stamped 
in a stone mortar, and boiled in oyle oliue vnto the consumption of 

