187 



13. Orthotriclium pallens, Bruch in Bridel. 



With O. Sprucii, in Clifton Ings, near York; June, 1842. 



14. Orthotrichura pumilum, Schwaegr. 

 Ash-tree in Clifton Ings, near York ; April, 1843. 



15. Orthotrichum Sprucii, Montagne in Hit. MonoDcious, some- 

 what pulvinate ; stem somewhat branched ; leaves erecto-patent, hgu- 

 late-oblong, rounded and minutely apiculate at the apex, keeled, wide- 

 ly areolate, margin recurved, nerve vanishing near the apex ; capsule 

 obovato-pyriform, short-necked, with 8 narrow striae ; calyptra cam- 

 panulate, naked; teeth of the peristome bigeminate, horizontal when 

 moist, reflexed when dry. 



"'Near Glasgow, 1824.' — Z)r. Walker- Arnott:' Banks of the 

 Ouse, Wharfe and Cock, Yorkshire ; by the Derwent near Matlock 

 Bath ; Henfield, Sussex ; Burford-bridge, Surrey ; near Bristol ; near 

 Twycross, Leicestershire. 



16. Orthotrichum tenellum, Bruch in Bridel. 



Trees by the Cock near Tadcaster, and by the Derwent, at Matlock 

 bridge ; near Castle Howard ; Beaumaris ; Dundry, near Bristol. 



17. Phascum Floerkeanum, Web. ^ M. var. jS. 

 Stubble-field south side of Bulmer Hagg, near Castle Howard. 



18. Ph. triquetrum, n. sp. Monoecious, scarcel}^ stalked ; leaves 

 trifarious, connivent, obovate, apiculate, boat-shaped, keeled, margin 

 reflexed, nerve excurrent ; capsule large, horizontal, spherical, im- 

 mersed. 



Summit of cliffs between Brighton and Newhaven, discovered by 

 Mr. BoiTer, in April, 1844. 



19. Tortula ambigua, B. 8f S. 



On a mud-capped wall by the road out of New Malton towards 

 York, Nov. 19, 1844. 



20. Tortula marginata, B. 8f S. 



Sandstone walls and rocks near Castle Howard, most abundant in 

 the park quarry. Stone-pits at Henfield, Mr. Borrer. 



21. Tortula papillosa. Wits. MSS. Rather tufted ; leaves obovate, 

 truly concave, spreading, margin involute when dry, widely areolate, 

 papillose, nerve produced into a mucro or hair. 



Huntington, near York, 1843. Castle Howard park ; LlansaintfFraid. 



22. Tortula squarrosa, De Notaris. Loosely pulvinate-caespitose ; 

 leaves linear-lanceolate, sheathing at the base, squarrose, somewhat 

 tortuous, pagina inflexed and undulated, granulose beneath, margin 

 somewhat denticulate, nerve stout, not produced. 



" ' On the beach at Hastings and in Beeding chalk-pit, Sussex ; in 

 both stations without fruit.' — Mr. Borrer.^'' 



