Mr. W. Mitten on the Mosses and Hepatica of Sussex. 367 



nerve ; and as this is by far the most usual state, it has the greatest 

 right to be considered the most perfectly developed form of the 

 species. * 



Var. rosulatum. 



B. rosulatum, Mitten MSS. 



Csespitulosum, humile, inferne tomentosum : folia ut pluri- 

 mum in capitulis rosulatis congesta, ovalia vel spathulata, acu- 

 minata, acuta vel obtusata, integerrima, nervo infra vel paulo 

 ultra medium evanescente apice ssepe torto et recurvo. 



In very small quantity and sterile on Woolsonbury Hill. 



Different as this moss appears at first sight from all other species 

 of Bryum, it too nearly resembles some states of B. capillare to ad- 

 mit of its being considered distinct : the leaves are very variable in 

 size, in form, and in the length of the nerve, as well as in the acumi- 

 nation or obtuseness of the apex ; the same rosulate head producing 

 some leaves that are elliptic, sometimes acute or sometimes obtuse, 

 or spathulate with the apex twisted about half-way round, and obtuse, 

 acute, or even sometimes bidentate. The nerve is sometimes very 

 short, at others it extends to a little beyond the middle. The texture 

 is similar to that of B. capillare, but it differs from all the common 

 forms of the species in wanting the piliform acuminate point. The 

 margin, if margin it may be called, consists only of a single row of 

 narrower cells. 



138. B. ccespiticium, Linn. 



On walls and banks, but not very common. 



139. B. erythrocarpum, Schw. 



At Henfield and Hurstpierpoint in small quantity ; not rare on the 

 forests. 



140. B. atropurpureum, Wahlenb. 



Frequent on the earth in waste places and on walls. 



141. B. argenteum, Linn. 



Common on the ground, on walls and roofs. On a wet sand-bank 

 near Hurstpierpoint, a state with pale yellow setae and capsules oc- 

 curs, but not otherwise different. 



142. B. albicans, Wahlenb. 



In the neighbourhood of Hurstpierpoint and Henfield ; not unfre- 

 quent nor confined to any particular soil, but always barren. 



143. B. annotinum, Hedw. 



In fruit at Balcombe and Tunbridge Wells : plants without fruit 

 are not uncommon. 



144. B. carneum, Linn. 

 Frequent on wet ditch-banks. 



