Wheldon : The North of England Harpidia. 



8 1 



Group falcatum Ren. 

 (//. fluitans /3 falcatum Bry. Europ.). 



Monoicous. Tufts yellow, passing- to red or green above, 

 becoming deep chestnut or brown below. Leaves falcate, 

 strongly curved, crowded, more or less truncate based, sinuo- 

 late or slightly toothed above. Nerve wide and long. Texture 

 firm, cells very long and narrow, those of the base and angles 

 with incrassate walls, often coloured orange red, small, little 

 dilated, shortly rectangular or quadrate, forming small more or 

 less distinct auricles. These are composed of smaller more 

 numerous cells than in the succeeding groups. (See fig. 2, p. 91.) 



Var. falcatum Schimp. Tufts yellowish, more or less 

 fuscous-reddish below. Stems of moderate length, erect, 

 subsimple. . Leaves rather closely arranged, falcato-recurved 

 throughout, the lower lanceolate, upper oblong-lanceolate, with 

 a shortly subulate acumen, involute below. Male flowers 

 numerous. 



9. Abbotts Moss (58), Holt ! Pendle Hill (59), Wheldon ! 

 Harris End Fell, Calder Valley above Oakenclough, Tatham 

 Moor, Lower Bleasdale, near Garstang, !! and Fairsnape Fell 

 (60), A. Wilson ! Tarnbrook Fell (60), A. Wilson and 

 Wheldon ! 



10. Hebden Bridge (63), Crossland and Needham ! Rams- 

 gill Beck, Nidderdale (64), J. S. Wesley ! Simon Seat, 

 Wharfedale (63), Dixon. Ilkley Moor (63), A. Wilson. Skip- 

 with (61), Ingham. 



11. Burnhope Seat (66), Ingham ! (teste Dixon). 



12. Potter Fell (69), Rev. C. H. Waddell ! 



Var. anglicum Sanio. (If. fluitans anglicum homophyllum 

 Hollii Sanio. H. fluitans var. Holtii Sanio of Braithw. British 

 Moss Flora). Stems elongated, rather rigid, yellowish green 

 above, fuliginose-fuscescent below, pinnate with numerous 

 short, crowded, erect branches. Leaves erecto-patent, lanceo- 

 late, with a long flexuose subulate acumen. Aurfcles approaching 

 more nearly those of the Group Amphibium, margin remotely 

 denticulate. Habit and colour very distinct. 



Mons. Renauld looks upon this as a transition form connect- 

 ing the Groups Amphibium and falcatum, but places it with the 

 latter on account of its colour. 



9. Abbotts Moss (58), G. A. Holt (locus classicus), June 1887. 



Var. ovale Ren. MS. (in litt. ad W T held.). Journ. Bot., 1901, 

 p. 299. Dark yellowish green, suffused with smoke brown, in 



1902 March 3. ~ v 



