42 CRYPTOGAMIA-MUSCI. 



from amongst the leaves ; capsule ovate, ribbed half-way down ; 

 ciliary processes 8 ; fringe spreading ; lid flattened with a straight 

 central beak ; calyptra very pilose GREV. Fl. Edin. 248. ; et 

 Fl Crypt, tab. 105. 



Hob. On rocks. On the craigs above Easington-house be- 

 low Belford. At Ord-wheel, Berwickshire, plentiful. 

 I have specimens also from Mr BAIRD, who probably 

 collected them near Netherbyres. 



8. O. striatum, stems erect, branched ; leaves patent, lanceolate, 

 slightly twisted when dry ; capsule sessile, ovate, smooth ; ciliary 

 processes 16 ; calyptra furrowed, somewhat pilose. 



Hob. On trees in woods, less frequent than Or. affine, 

 which it much resembles. 



The Orthotricha are peculiar in their habit, and have much 

 mutual resemblance. They grow in little perennial tufts, 

 which are of a dark green when placed on stones, but when 

 on trees more commonly of a yellow -green colour. Their 

 leaves are very minutely cellular, lanceolate, entire, and 

 somewhat revolute at the margins. Their capsules are 

 erect, cylindrical, very copiously produced, and to be found 

 at all seasons of the year, the old in general being inter- 

 mixed with those which are advancing towards maturity. 



19. POLYTKICHUM. 



* Calyptra pilose. 



1. P. cwnmune, stem simple ; leaves spreading, rigid, subulate, 

 serrated ; capsule erect, square, with an evident apophysis ; lid 

 with a short curved point. 



Hob. On moors, common. June. 



The stems of this fine moss vary from 2 to 12 inches in height, 

 according to the greater or less moisture of the station in 

 which it grows ; and in the smaller specimens the margins 

 of the leaves are often pellucid, and the apophysis of the 

 capsule indistinct. These constitute the P. attenuatum of 

 many botanists. 



In this country, matresses, superior to those of straw, are 

 sometimes made with this Polytrichum ; and we have seen 

 door-mats, and very neat brushes made of the luxuriant 



