C&Y PTOGAMIA MUSCL 47 



22. DICRANUM. 



* Leaves inserted on all sides of the stem. 



1. D. scoparium, stems elongated ; leaves sickle-shaped and in- 

 clined to one side, subulate, canaliculate ; capsule cylindraceous, 

 arched ; lid with a long beak. 



Hab. In deans and on moors, common. If. 



This fine moss is very generally found on rocks, or large 

 stones, which it covers partially with a thick soft elastic 

 cushion. It produces fruit in winter, and though the 

 stalks are in general single, yet specimens with 3 or more 

 from the same sheath are not rare. These constitute the 

 Die. ma jus of SMITH, Fl Brit. 1202. 



2. D. undulatum, stems elongated ; leaves straight, nearly plane, 

 long, lanceolate-acuminate, serrated at the points, transversely 

 undulate when dry ; " capsule cylindraceous, cernuous ; lid with 

 a long beak." 



Hab. Lamberton Moor, plentiful. Spring. If 



3. D. glaucum, stems branched, fastigiate ; leaves ovate-lanceo- 

 late, straight, somewhat convolute, nerveless, entire, reticular $ 

 capsule ovate, Cernuous ; lid beaked. 



Hab. On moors in moist places, in dense masses of a straw 

 colour, similar to that of the Sphagna. 7j[ 



4. D. crispum, stems very short, simple ; leaves setaceous, di- 

 lated at the base, spreading, flexuose, entire ; capsule ovate, sub- 

 erect ; lid with a long beak. 



Hab. On the sides of drains cut through turfy bogs, not 

 common. Below Shoreswood Hall, Dr Thompson. In 

 the dean below Allerton Mill. July. I/. 



5. D. varium, stems short ; leaves narrow, lanceolate, entire, 

 rigid, inclined to a side ; capsules ovate, subcernuous ; lid conical, 

 acuminate. 



Hab. Moist clay banks, in grass-green patches, not uncom- 

 mon. Spring. 



6. D. heteromallum, stems slightly branched ; leaves subulate, 

 nearly entire, sickle-shaped, and inclined to one side; capsule 

 ovate, subcernuous ; lid with a long beak. 



