698 



sources of those rivers."* Dr. Greville, who has obligingly supplied 

 me with specimens, has since discovered it in woods near Forfar ; 

 and Dr. Balfour, to whom I am also indebted for specimens, has sup- 

 plied me with the following list of Scotch localities : — " Woodcock- 

 dale wood, near Linlithgow ; in woods at Castle Campbell, near 

 Dollar ; in a wood at Carlochar Glen ; head of Glen Isla ; in Camp- 

 sie Glen and Finglen, near Glasgow ; in woods near Corra Lin, Lan- 

 arkshire ; in woods near Dunfermline ; and in woods at i^uchindenny, 

 near Edinburgh." 



This species has also been found in Ireland. Mr. Moore, of the 

 Glasneviu Botanic Garden, says, " I suppose this species is not un- 

 frequent in the county Antrim, on the sides of mountain glens where 

 the geological formation is similar to that at Wolf Hill, viz. lias mixed 

 with hardened chalk, but of this I am not exactly sure : the only 

 place where I have collected specimens was a deep mountain glen 

 near Cushendall, called Glendoon : I took it for a variety of E. syl- 

 vaticum, not being then acquainted with the species ; but on compa- 

 ring the specimens with those picked at Wolf Hill," the residence of 

 William Thompson, Esq., and the original Irish locality, " I found 

 them identical, and it strikes me forcibly that I have passed it over in 

 several other glens." 



I am not aware of its having yet been recorded as inhabiting Eng- 

 land or Wales. 



This species is described by Willdenow, Decandolle, Vaucher, 

 Diedrich, and other authors, as E. umbrosum, and by Sir William 

 Hooker and Mr. Babington as E. Drummondii. It is well figured by 

 Vaucherf in all its states ; the figure in ' English Botany ' % repre- 

 sents the fertile and barren stems correctly, but neither in the figure 

 nor description do I observe any reference to the combination of 

 fruit and branches on the same stem. Diedrich's figure § has fruit 

 and branches on one stem, but neither separate. 



The roots and rhizoma precisely resemble those of the preceding 

 species, the former being small, fibrous, sinuous, often divided, and 

 black ; the latter dark brown and striated, and extending horizontally. 



The stems are of three kinds — Jirst, bearing fructification only ; 

 secondly, bearing fructification and branches ; and thirdly , bearing 

 branches only. The fertile stems are four to six inches in height, 



* Hooker in ' English Botany' Supp. 2777. 



f Monographie des Preles. % Eng. Bot. Sup. 2777. 



§ Deulcslilauds Kryptogamisclie Gewasclise. 



