118 BRYUM. 



2. Teeth of the exterior peristome as long as the interior one. 

 * Leaves subulate. 



6. Br. pyriforme ; stems slightly branched ; leaves subulato- 



setaceous, flexuose, serrated, nerve very broad ; capsule py- 

 riform, pendulous. (TAB. XXVIII.) 



Br. pyriforme. Swartz. Muse. Suec. Moug.et Nestl. n. 31. Br. 

 aureum. Turn. Muse. Hib. p. \ 18. Engl. Boi. t. 389. Webera pyri- 

 formis. Hedw. St. Cr. v. 1. t. 3. Mnium pyriforme. Linn. Dill. 

 Muse. t. 50. / 60. 



HAB. Rocks, especially of sand-stone. Likewise on the 

 mould of greenhouse pots. 



Bryum pyriforme is remarkable in the shape of its leaves, 

 of which the upper ones are much the longest and most 

 flexuose. They are formed, moreover, except at the very 

 base, almost wholly of nerve ; there being only a narrow 

 membranous margin, which, towards the extremity, is 

 deeply serrated. The capsule and fruits talk are of a blight 

 orange-colour when mature. 



* * Leaves never subulate. 



t Leaves without any thickened margin. 



-t- Leaves very obtuse. 



7. Br. julaceum ; stems branched; leaves closely imbricated, 



broadly ovate, concave, entire, obtuse, nerve running nearly 

 to the poinf; capsule obovato-cylindraceous, pendulous. 

 (TAB. XXVIII.) 



Br. julaceum. Schrad. Spicil. p. /O. Engl Bot. t. 2270. Br. fill- 

 forme. Dicks. Br. argenteum 0. Linn. Sp. PL Schwaegr, Suppl.-** 

 Hypnum argenteum var. /3. Mohr. Dill. Muse. t. 50. f. 63. 



HAB. Mountains in England, Scotland, and Ireland. 



The characters above given we have found constant in 

 this plant, and we therefore i annot agree with Mohr and 

 Schwaegrichen, who, with Linnaeus, considered it merely 

 as a variety of Br. argenteum. It is not in the shape of 

 the leaf and of the capsules only that they differ, but our 

 individuals are taller and more slender, of a yellowish green 

 colour, resembling that of Hypmim stramineum, and the 

 leaves are of the same colour and texture throughout. This 

 species is never found on walls and roofs of houses, as is 

 commonly the case with Br. argenttum, but on the sides 



of streams in mountainous situations, 



<,..;> '! 



