70 APLOPERISTOMI. [Grimmia. 



trifid at the extremity. A specimen, every way according with 

 our plant, has been sent to us by Dr. Hornschuch from the 

 Saltzburgian Alps, under the name* of Gr. incurva of Dr. 

 Schwaegrichen ; but the true Gr. incurva of Dr. Schwaegrichen 

 has the leaves singularly patent, much narrower, with far 

 shorter hair-like points. 



Mr. Arnott considers that this plant may be the same as Gr. 

 apiculata of Schwaegrichen, but the whole plant in this latter 

 species is shorter, yet stouter, its leaves are scarcely piliferous or 

 twisted, and the teeth, Dr. Greville says, are perforated, not 

 cleft. 



7, Gr. torquata ; stems elongated exceedingly densely pulvinate 

 of a very soft texture, leaves lanceolate acuminate the upper 

 ones scarcely piliferous, all of them remarkably spirally 

 twisted when dry. (SuPPL. TAB. II.) 



Grimmia torquata. Hornsch. in lift Hook, in Drummond, Muse. 



Scot. v. 2. n. 28. Greville, Scot. Cr. Fl. t. 199. Arn. Disp. Muse. p. 

 21. 



HAB. Dry rocks at a considerable elevation upon the 



Breadalbane mountains, plentiful ; but always barren. 

 We have introduced this into the present division of the 

 genus, and, we may add, into the genus itself, (although we are 

 ignorant of the nature of the fruit and fruitstalk,) in con- 

 sequence of its affinity with the preceding species, Gr. spiralis. 

 We have, too, under that species noticed the differences be- 

 tween them. We shall, therefore, content ourselves with 

 observing on the present plant, that, while the mass or tuft, 

 which the stems form, is hard and tough, and firmly com- 

 pacted when dry, yet when moist, so flaccid are the stems, 

 that they can scarcely be handled without their falling down. 

 In that state, too, they are of a rich deep brown colour, green- 

 ish at the extremities. 



-j- f Fruitstalks straight. 

 -JT- Leaves hair-pointed. 



8. Gr. leucoph&a ; stems rather short tufted, leaves elliptical very 



hoary with long piliferous points, fruitstalk subexserted, cap- 

 ]0 



