[ 243 ] 



MOSSES AND I.IVKRWORTS. 

 BY D. m'ardl:^. 



x7 



The appended lists of these plants which were collected by me on the 

 Galway excursion are provisional only. It will be observed that the list 

 of mosses is very short, 17 species only, excluding a few species not yet 

 determined. The entire district we visited in Aran was very scanty in 

 moss vegetation ; even the commonest rock moss, Ptychomittium, which 

 clothes such formations in almost every county in Ireland, was not met 

 with, and very few grow on or amongst the bare rocks. The summit of 

 the mountain from Cappanawalla to Ballyvaughan, where I went in search 

 of rare flowering plants, produced very few mosses; it is one vast *• stone 

 field " as far as the eye can reach. We met with no mountain stream ; 

 on the banks and rotting timber in such places mosses luxuriate in the 

 shade, heat, and moisture. On the lower slopes of the Burren, as at 

 Ballyvaughan, and on Carn Seefin a good representative list of mosses 

 could be made would time permit. 



The total number of liverworts collected is forty-seven. Of these 

 twenty-three are not reported from the counties we visited in Dr. D. 

 IMoore's work on the Irish Hepaticae, and two are additional species to 

 the list in that important publication. Out of fourteen species ot 

 Lejeunea known to grow in Ireland I collected eight ; four of these are 

 additions to the Galway list. The rare Lejeunea Mackaii occurs sparingly 

 on the north island of Aran on damp rocks. It is remarkable amongst 

 Lejeunea in having large undivided obcordate folioles or stipules by which 

 it is easily known from all others. It is the Irish representative of four 

 species included by Dr. Spruce in the genus Homalo- Lejeunea, natives of 

 the Peruvian Andes and Brazil. Scapania aspera, Mull., was first detected 

 by me in the Co. Cavan in 1893, and now it has turned up in both Clare 

 and Galway ; it may lurk in herbaria under the name of Scapania 

 neviorosa ; its place is between that species and S, aqtiiloba ; possibly it 

 belongs to the latter. 



Plagiochila interrupta I have not found before. I am not aware that it 

 has been published as Irish, and may have been overlooked for Saccogyna 

 or Chiloscyphus, which it resembles ; the plants collected by me are 

 identical with those gathered by Dr. Carrington in Bolton Woods, York- 

 shire, specimens of which are included in the excellent Fasc. Hepatic^t 

 No, 86, of Carrington and Pearson, kindly placed at my disposal by Mr. 

 F. W. Moore, A.L.S. 



MUSCI. 

 Campylopus sctlfollus, Wils.— Carn Seefin. 

 Tortula tortuosa, Hedwig.—Kilronan. 

 Tortula rural is, Linn.— Rocks, Kilronan. 

 Tortula fallax, Hedwig.— Aran. 

 Tortula murallSt Timm.— Aran, Gentian Hill. 

 Orthotrlchum afflne* Schrad.^ Ballyvaughan. 



