grout] 



SOME COMMON MOSSES 



339 



rotting wood, has red stems and looks like the accompanying 

 photographs can pretty safely be referred to this species. The 

 capsules ripen from late autumn through the winter. 



Hypnum Haldanianum Gerv. is another species common on 

 rotten logs and wood. The capsules are much like those of H. 

 imponens and ripen at about the same time, but the branching is 

 irregular, the leaves straight and evenly arranged about the stems. 



Both the preceding are still classed as Hypnum but our next 



Stem end of Hypnum impanens xy 



Hypnum uncinatum Hedw. is now put in the genus Drepamocladus 

 because (not present in Hypnum proper) its leaves have a strong 

 midrib, easily visible with a strong lens. This species grows on wet 

 earth and stones in shaded places. It is frequent in most localities 

 in the North East and very common in the mountains. The 

 branching is irregular and the leaves so strongly secund and 

 hooked at the tips of the stems and branches that I have called 

 this the Hooked Moss. The hooked moss is extremely variable 

 in size and there are numerous closely related species. It is dis- 

 tinguished from other species of Drepanocladus l)y its rather long, 

 slightly curved capsules and strongly wrinkk^l (lengthwise) k\'i\-es. 

 The capsules mature from spring to summer. 



