M'Ardle — On the Musci and Hepaticce of the Co. Cavan. 607 



up with, stately specimens of the white spruce, Ahies alha, of huge 

 dimensions, several species of oak, Pirus Aucuparia, Chestnuts, and 

 enormous specimens of Beech. These were in full foliage, which was 

 coloured with the charming tints of autumn. The most interesting 

 find amongst flowering plants was Sagina nodosa, which grows 

 sparingly by the margins of the lakes, and has not been previously 

 reported from the county Cavan. The most successful day's collect- 

 ing was done along the banks of the Analee river. From Ballyhaise 

 bridge I followed its course for a considerable distance, and from its 

 banks crossed into the oak wood, where I gathered, in some quantity, 

 Scapania aspera, which grows plentifully amongst the limestone rocks, 

 and is an addition to the list of Irish Hepaticse. The collection made 

 in the Pamham demesne was also interesting, on account of the occur- 

 rence there of the curious Metzgeria conjugata in a fertile state. The 

 plant is unique amongst all the other species in the genus, in having 

 a monoecious inflorescence, wtich character is well shown in Plate 

 XXII., so excellently delineated by Mr. Allen. 



The. total niimber collected is of Musci forty-one species, and of 

 Hepaticse thii'ty-nine. The occurrence of Radula valuta and Ricca/rdia 

 palmata so far northward is remarkable. 



My best thanks are due to M. B. Slater, Esq., of Malton, York- 

 shire, whom I consulted on critical species, and to W. N. Allen, Esq., 

 for the drawings of the two plates. It would have been impossible 

 for me to be able to furnish, these extended lists were it not for the 

 kindness of the late W. Humphreys, Esq., j.p., of Ballyhaise House, 

 who fi'eely granted me permission to collect in his demesne. 



MUSCI. 



Sub-Order I. — Sphagnace^. 



1. Sphagmim acutifolium, Ehrh. Slieve Glah. 



S^jJiagnum acutifolium, Ehrh., var. rubellum, Wils. Slieve Glah. 



2. Sphagnum ciisjndattwi, Ehrh., var. plumosum, Nees. Wet places, 



Slieve Glah. ; often found floating. 



3. Sphagnum papillosum, Jjindl). Killakeen, sparingly. 



11. PoLTTEICHACEiE. 



4. Catharinea undulata, "Web. et Mohr. Slieve Glah. 



5. Polytrichum aloides, Hedwig, = Pogonatum aloides, P. Beauv. 



Peaty banks, Killakeen. 



