20 



axils of the upper stem leaves, archegonia with a few rather 

 long filiform paraphyses; no distinct perichoetial leaves; 

 vaginula short, cylindrical ; seta an eighth to a quarter of 

 an inch long, erect; capsule with a distinct neck, smooth, when 

 dry obconical, widest at the mouth, operculum conical acute. 

 Calyptra when young brown, very narrow conical, cleft on 

 one side for a third of its length, cells spirally arranged ; 

 peristome half immersed, teeth sixteen, very slender, linear- 

 subulate, transverse articulations distant 



Fruit matures in August. Discovered near Glasnevin, 

 Dublin, on the top of a sandstone wall, by Mr. David Orr. 



It has no nearly related Euroj^ean allies. 



Wthera Breidleri, Juratzka {fide Fergusson). Dioicous, 

 growing in extended light green patches, procumbent in the 

 lower part, which is of a reddish brown colour ; stems about 

 1 J inch long, leaves ovate, decurrent, erecto-patent, concave, 

 serrated towards the apex, margin recurved; nerve thin, 

 vanishing below the apex; areolae rather large, upper ones 

 narrow elongate, acute at both ends, lower ones narrow 

 elongate-quadrangular. Male flower terminal, discoid . 

 outer perigonial leaves spreading, elliptic-lanceolate, longer 

 than the stem leaves, saccate at the base, margin strongly 

 recurved, apex cucullate, serrated ; inner perigonial leaves 

 obovate, suddenly acuminated, serrated at the diaphanous 

 apex, areolae large, elongate-quadrangular; antheridia sub- 

 sessile with short filiform paraphyses. Perichoetial leaves 

 linear lanceolate, recurved at the margin, strongly nerved, 

 nerve vanishing below the apex; seta geniculate near the 

 base, vslender; capsule oval pendulous, glaucous green when 

 young, pale reddish brown when mature. 



Fruit matures July to August. Habitat : Abundant on 

 wet debris of slaty rocks near springs, on the table lands 

 above the head of Glen Callater, also on Loch-na-gar, and in 

 Canlochan Glen. Its companions above Glen Callater are 

 Dicramt7)i StarJcii, D. falcctturii, Oligotrichiim hercynicumi 

 and Polytrichum sexangulare. In the springs themselves 



