on British Ferns. vii 



Genus. — Amesium, Newm. 



Ultimate divisions without a distinct mid-vein : veins of 

 ultimate divisions very few, sparingly branched, free at the 

 extremities : involucres narrow, linear, frequently facing 

 each other as in the preceding genus, but rarely overlap- 

 ping. 



Ohs.—'Roth. unites the species of this genus with those of Scolopen- 

 drium, all other authors with Asplenium, from which, however, they 

 appear to me abundantly distuict. 



* Frond simple. 



Amesium septentrionale. 



Acrostichum septentrionale, Linn. SjJ. PI. 1524 ; Light/, 



Fl. Scot. 656 ; Huds. Fl. Aug. 450 ; Bolt. Fil. Brit. 



12, t. 8; With. Arr. 764. 

 Asplenium septentrionale, Sm. E. FAy. 308, E. B. 1017 ; 



Newm. N.A.27, F. 2Q9 ; Hook, and Am. 573 ; Bah. 



41. 



Amesium septentrionale, Neivm. F. 10. 



Stipes and frond of equal length, their separation indis- 

 tinct ; frond linear, narrow, gradually diminishing into the 

 stipes, sometimes forked, apices of divisions bifid; clusters 

 of capsules in two, three, or fom- long linear series. 



A small and rare fern, in rocky and mountainous pla- 

 ces. Somerset, Caernarvon, Cumberland, Northumber- 

 land, Edinburgh. 



** Frond linear, pinnate. 

 Amesium germanicum. 



1770. Asplenium germanicum, Weiss, PI. Cr. 299 ; Willd. 

 Sp. PI. V. 330 ; Hoffm. Deutschl Fl. ii. 13 ; Ehrh. 

 Crypt. 43; Presl. Tent. Pteridog. 108; Newm. F. 265; 

 Bab. 414. 



1779. Asplenium Breynii, Eet^, Obs. Bot. fasc. i. 32 ; Sw. 

 Syn. Fil. 85. 



