mosses. 85 



plants to a place in the group. The Moss we had just 

 found had strap-shaped leaves, waved at the margin, and 

 toothed : they were crowded on the upper part of the 

 stem. The urn was cylinder shaped and curved, and the 

 veils had lone beaks. The old fruit had almost lost its 

 shape, and the new was scarcely formed. Later in the 

 year we got better specimens of the Wavy-Hair Moss 

 (Atrichum undulatum, fig. 6.) It is a very common 

 moss, flourishing freely in moist shady places on a clayey 

 soil everywhere. The Hercynian Hair Moss is a Scotch 

 and Welsh species (Olgotrichum hercynicum), it is of a 

 firmer habit than the Wavy-leaved. 



The Hair Mosses proper are very showy plants, woody 

 in their stems, with rigid leaves, hairy veils, and 

 secondary fructification in a star of leaflets. The nanu- 

 is given on account of the hairs on the veil. The Dwarf 

 Hair Moss (Pogonatum nanum), we found on sod-topped 

 walls in the Highlands. It is the smallest of the group 

 with spreading leaves, and a roundish urn. The Aloe- 

 leaved species (P. aloides, fig. 5), Edward found abund- 

 antly at Hawkhurst on the same clay banks where the 

 Earth Moss flourished ; here the leaves are lance-shaped, 

 and the urn oval. When moist the leaves are spreading, 

 but they cling close to the stem when dry. The Urn- 

 fruited Hair Moss (P. urnigerum, fig. -4), was sent to us 

 from the Westmoreland hills, and has a cylinder- shaped 

 urn, its leaves are shorter, pointed and toothed, and of a 

 glaucous tint. I knew that the Swaledale moors must 

 produce members of this group, so I set out on an 

 especial excursion to seek them, repairing once more to 

 Summer Lodge Bank. 



