448 HEPATIC^. 



Holt. 9. Hattersley, Marple, Cheshire, G. A. Holt ; St. Anne's, 

 ./. A. WliehJon ; Hindburn, A. Wilsou ; LonCTridg-e, Lancashire, 

 ./. A. WlicJdon. 10. Bracken Ghyll, Dent, G. Statjter, and many 

 other stations. 11, 12. Low Borrow Bridge, Westmorland, G. 

 StaljJer. 13. Damp roadsides, New Galloway, J. McAfidrew ; 

 Whitehiil, ./. Mc Andrew; Dalveen Hills, C. Scott; Beld Craig, 

 Dr. IF. NicIioL 14, 15, 16. Moidart, West Inverness, common 

 in wet places among rocks, S. M. Macvicar. 17. 



T. Frequent, Tore Cascade ; Cromaglown, Killarney, Dr. 

 Carringtoii ; Dunkerron. Co. Kerry, Dr. Taylor ; Altadore den and 

 Lough Bray, Co. Wicklow ; Glencar, Co. Sligo ; Glenballyemon, 

 Co. Antrim, Dr. D. Moore ; Hill of Howth, rare, on a small 

 shallow bog by the margin of a brook near Ballykill, D. McArdle ; 

 on wet rocks, Killarney, McArdle & Lett. 



Found on the Continent and in North America. 



Obs. — Distinguished from P. ejjip/iylln by being dioicous, 

 growing in smaller patches, fronds narrower, more divided and 

 crisped, more translucent and shining, calyptra included in 

 involucre, not exserted. smooth, not tuberculate, valves of capsule 

 paler, inner layer of cells destitute of semi-spiral threads, elater- 

 bearers slenderer, more erect and less twisted, elaters only bent 

 not twisted, antheridia fewer and more scattered ; according 

 to Herr Jack it is a calcareous plant and more commonly 

 distributed in Europe than P. epijjJii/lla, although frequently 

 confounded with it when sterile. 



I am indebted for some of my notes to Herr Jack's valuable 

 paper on PelUa in '' Bot. Zeii," 1895, 81 Bd. Heft 1. 



See notes under P. Neesiana to distinguish it from that 

 species. 



It is probably the /. endivicefolia of Dickson as Lindberg 

 states, but as Taylor was the first to clearly and fully distinguish 

 the species from ejnphylla, I retain his characteristic name. 



Description of Plate CXCVIIL — Fig. 1. Fertile plant, 

 natural size. 2. Sterile plant, natural size (Hooker). 3. Male 

 plant, natural size (Hooker). 4. Ditto magnified (ditto). 5. 

 Portion of same, more highly magnified (ditto). 6. Capsule, 



