ME. G. E. HUNT ON MOSSES NEW TO BRITAIN. 237 



16 in number, equidistant, no inner peristome, and by the 

 glossy wbite, slightly hairy calyptra. On an ash-tree, 

 Dailly, Ayrshire. Discovered by Mr. John Shaw. 



Orthotrichum pumilum, Sw. On ash trees at Inverkip 

 and Dailly, Ayrshire. The 0. pumilum of Wils., Bry. Brit., 

 is 0. fallax, Sw., and has a shorter, wider capsule than 

 the present species. 



Orthotrichum obtusifolium, Schrad. Distinguished from 

 all its allies by the plane, not recurved, margins of its 

 ovate, obtuse, gemmiparous leaves. On trees near York 

 and Bristol. 



Ulota calvescens, "Wils. Distinguished from U. crispa 

 by its longer setae, and shorter capsule, not contracted 

 below the mouth when dry, also by its smooth glossy 

 calyptra. Fruit ripens in June. Discovered at Killarney, 

 on young oaks, by Dr. Moore -, Dailly and Loch Doon, on 

 trees, Mr. John Shaw. 



Zygodon gracilis, Wils. MS. Leaves plain at the 

 margins, denticulate near the apex; areolation close and 

 punctate above, large and pellucid below ; in habit much 

 resembling Tortula recurvifolia, Sch. Old walls, Malham, 

 Yorkshire. Discovered by Mr. J. Nowell, and fruit found 

 by him, Sept. 1866. 



Atrichum angustatum, Brid. Inflorescence dioicous, 

 leaves narrower, capsule narrower than in A. undulatum. 

 Braes of Doune, with fruit, Mr. A. M^Kinlay. Male plant 

 in Sussex, Mr. Mitten. 



Atrichum tenellum, E-ohl. Dioicous; a smaller, more 

 slender plant than A. undulatum. Near Loch Goil Head ; 

 near Killin, Perthshire. 



Atrichum laxifolium, James [A. crispum, Wils. MS.). 

 A most beautiful species, difiiering from A. undulatum in 

 its dioicous inflorescence, shorter, wider leaves, and areola- 

 tion twice as large. The male plant only found in Britain. 

 Banks and rocks by the streams of the Saddleworth 



