Wheldon : The North of England Harpidia. 



85 



Yar. brachydictyon Ren. Green, in broad patches, laxly 

 tufted. Stems slender, erect, pinnate. Upper leaves short, 

 feebly secund, oval at the base, often sulcate, terminating- in a 

 broad short acumen. Nerve thick and wide. Cells short, oblong- 

 sublinear, the lower very short, those of the large, rounded, 

 swollen auricles numerous, dilated with usually thin walls. 



Frequently referred to H. aduncum, on account of its short 

 lax basal cells. The firmer texture, thicker nerve, and occa- 

 sionally denticulate margin will assist in identifying it. 



9. Morley Common and Oakmere (58), Wm. Wilson! Rain- 

 ford Moss and Xetherton (59), Wheldon! ! Longridge Fell (60), 

 Wheldon ! ! White Moss, Hindburn (60), Wheldon and A. 

 Wilson. 



10. Strensall Common (62), Wheldon! Skipwith Common 

 (61), Ingham ! Pilmoor (62), W. Ingham ! 



Yar. purpurascens Schimp. Often entirely purple, but 

 sometimes purple and green. Stems rather compactly tufted, 

 densely branched. Leaves crowded, more or less falcate, 

 oblong-lanceolate, with a moderate point, striate, small. Nerve 

 purple, reaching dearly to the apex, stout. Cells of medium 

 length, between those of the vars. pinnatum and brachydictyon, 

 but seeming narrower on account of the more incrassate walls. 

 Auricles triangular, of large dilated cells, which are elongate, 

 incurved, few in number, sometimes arranged in a single row, 

 with usually somewhat incrassate walls. This variety connects 

 the Group exannulatum with Group RotcE. 



8. Harland Edge, Beeley (57), W. R. Linton! 



9. Fishpool and Blackstone Edge (58), Holt! Calder Valley, 

 above Oakenclough (60), A. Wilson ! ! Harris End Fell (60), 

 A. Wilson. 



10. Wnernside (64), Wheldon ! 



11. Weardale (66), Ingham ! 



12. Above Staveley Hill Head (69), Waddell ! Barrow 

 Mountain (69), Mrs. Monsarrat. Mardale (69), A. Wilson ! 



Sub-Group Rotse Ren. 

 (Hypnum exannulatum 7 Rotce Schimp. 

 Amblystegium Rotcc DeNot. Hypnum stenophyllum Wilson. 

 Hypnum fluitans var. Stenophyllum Schimp.). 



Dioicous, almost always sterile, usually purplish, rarely 

 entirely green. Leaves rather distant, narrower and longer 

 than in group exannulatum, with piliform attenuated points, 

 toothed. Nerve strong", percurrent or excurrent, sometimes 



1902 March 3. 



