XLiv] PHYLLITIS 191 



Lastly, there remain certain small genera which have been ranked with 

 the Asplenieae(Diels, E. and P. 1,4, P- 222): but Copeland has more recently 

 pointed out their relation to Phyllitis {Philipp.Jonrn. 191 3, Vol. VIII, p. 1 5 O- 

 They are Triphlebia Baker and Diplora Baker. Already these had been 

 placed by Christ under the generic heading Scolopendrium Sm. {Farnkr. 

 p. 212). After examination of the specimens in Kew and the British Museum, 

 I assent to the statement of Copeland that these Ferns are not unstable in 

 frond-form alone : even the characters used in founding the genera are not 

 invariableon single plants. His conclusion is that the proper nameof the Ferns 



Fig. 708. Phyllitis nigripes (Fee) O. Ktze. Centrally a plant, natural 

 size, showing habit. To the right part of the blade with reticulate 

 venation, and irregular partial coenosori. Left a scale with distal 

 glandular cell. (After Fee, from Christ.) 



Styled Diplora and Triphlebia is probably Phyllitis Diirvillei (Bory) O. Ktze. 

 {I.e. p. 152). At that we may leave them for further investigation, for they 

 do not appear to throw any important light on the questions in hand. 



On the ground of their linear sori a number of rather heterogeneous 

 genera have been associated under the heading of the Taenitideae, and 

 their relation has been suggested in many quarters with the Blechnoid 

 Ferns. Professor Von Goebel has recently examined them in detail, and 

 considered their probable connections critically {Btnt. Ann. Vol. XXXVI, 

 1926, p. 107). The result has been to increase the doubts already entertained 

 as to the relationship of any of them to the Blechnoid series, while some, 



