28 MUSCI. [Entosthodon. 



On banks, especially in the mountains ; common. The young 

 calyptra, of a light lake red, render tufts of this species very conspi- 

 cuous. The stems sometimes exceed an inch in length ; the lid has a 

 very short beak. 



3. P. juniper mum, Willdenow. Leaves lanceolato-subulate, 

 their margins involute, entire, their points acuminated, opaque, 

 subserrated ; capsule ovate obtusely quadrangular, furnished 

 with an apophysis ; lid obliquely rostrate. Wild. Fl. JBerol. 

 Muse. Brit. ed. 2, p. 45, t. 10. 



On heaths and banks in the mountains ; common. The serratures 

 of the leaves sometimes not to be observed. The young calyptree, 

 of a brownish straw colour, easily distinguish this species from the 

 preceding. 



4. P. commune, Linn. Stems elongated ; leaves patent 

 lineari-subulate, their margins plane, serrated as well as the 

 points of the keels ; capsule oblong, quadrangular, with an 

 evident apophysis. Linn, sp.pl. 1573. Muse. Brit. ed. 2, p. 

 46, t. 10. 



On heaths and in woods ; very common. The stems are usually 

 simple, varying much in height, from two inches to a foot : the leaves 

 are sometimes short and broad, and present diaphanous margins. 



5. P. alpinum, Linn. Stems elongated, branched ; leaves 

 patent, subulato-lanceolate, their margins plane, serrated as well 

 as the points of the keels; capsule ovate, oblique, with an in- 

 distinct apophysis. Linn. Sp. PI. p. 1573. Muse. Brit. ed. 2, 

 p. 48, t. 11. 



On subalpine mountains ; not uncommon. The capsules some- 

 times turn perfectly black, as do the tops of the setce. 



6. P. urnigerum, Linn. Stems elongated, branched ; leaves 

 ereeto-patent, lanceolate, acute, their margins plane, serrated ; 

 capsule nearly erect, cylindraceous, without an apophysis. IJnn. 

 sp. pi. p. 1573. Muse. Brit. ed. 2. p. 49, f. 11. 



On dripping banks ; not uncommon. 



7. P. aloides, Hedw. Stems rather short; leaves lineari-lan- 

 ceolate, obtuse, their margins plane, their tops as well as those 

 of the keels serrated; capsule nearly erect, cylindraceous, 

 without an apophysis. Hedw. St. Cr. v. I, t. 14. Muse. Brit. 

 ed.2,p. 49, L 11. 



On moist banks ; common, When the capsule is subglobose, it is 

 the P. nanum of Hedwig. 



j- f Peristome double. 



A. Inner peristome of distinct teeth or cilia. 



22. Entosthodon, Schwaegr. 



Seta terminal. Peristome double, outer of 16 oblique teeth, 

 lying across the mouth of the capsule ; the inner a mem- 

 brane, barred with dark lines (corresponding to the inter- 



