POLYTllICHUM. 165 



■^ Calyptra destitute of hairs*. 



1. PoLYTRiCHUM UNDULATUM, Iletlw. {Undulated Hal r 

 Moss.) Leaves membranous, lanceolate, waved, the mar- 

 gins plane, toothed, denticulate, the nerve winged ; capsule 

 cylindrical, curved; lid subulate. — Eng. Fl. p. 48. Catha- 

 rinea callibryon, MilU. Sijn.pt. \. p. 192. 



Moist shady banks, in woods and on waste gi-ound, fre- 

 quent. Fr. Autumn and "Winter. A very distinct and 

 beautiful Moss, readily catching the eye of the muscologist 

 during his winter rambles. The peristome is a very beau- 

 tiful object for the microscope. 



^. PoLYTUiCHUM Hercynicum, Hcdw. [HercT/nian 

 Hair Moss.) Leaves lanceolate, rigid, entire, their sides 

 involute, their nerve broad, impressed with furrows ; capsule 

 oblong, puberect; lid conical. — Eiig. Fl.p. 48. Catharinea 

 hercynica. Mull. 8yn.pt. 1. p. 196. 



On lofty mountains. Fr. Summer. Abundant on the 

 Breadalbane range in Perthshire. Litermediate, as regards 

 its foliage and calyptra, between the preceding and follow- 

 ing species, whence they have been placed in two different 

 sections of the Natural System by Midler. 



* This character has suggested tlie synonyms Oligotrichum and AtricJmm, 

 "few " or "no hairs." 



