276 Yorkshire Naturalisis at Dent. 



The rare S. uliginosa was searched for unsuccessfully above 1,800 ft. 

 A line patch, a foot in diameter, of Ptilidium ciliare was noticed at 

 about 1,900 ft. This more usually occurs as scattered stems among- 

 Callnna, etc. Lophozia quinquedeniata was common all over the 

 mountain slope. 



Of the wooded ghylls at lower levels, Scotcher Ghyll may be taken as 

 an example. 



Lejeuneas were frequent, Lejeunea lavifolia, Microlejettnea ulixina, 

 and also the rare Cololejeunea Rossettiana (found with perianths) being 

 noted. Metzgeria pubescens was abundant on the rocks, as it also was on 

 the damp walls. 



Plentiful by the sides of the streams, both on the mountain, and in the- 

 ghylls, were large patches of Blepharostoma trichophyllum, one of the most 

 beautiful of the foliose hepatics, especially when viewed microscopically. 



The following is a list of the species noted : — 



Reboulia hemisphaerica Chiloscyphus polyanitens 



Conociphaluni conicum Cephalozia biciispidata 



Liinularia cruciata Calypogeia Trichomanis 



Preissia quadrata Lepidnzia reptans 



Marchantia polymorpha Blepharostoma trichophyllum 



Metzgeria furcata Ptilidium ciliare 



AI. pubescens Diplophyllum albicans 



Piltia epiphylla Scapania aspera 



Alicularia scalaris S. nemorosa 



Aplozia riparia S. dentata 



Gymnocolea inflata S. undulata 



Lophozia ventricosa S . irrigua 



L. quinquedentata Radula coniplanata 



L. Floerkii Madothica platyphylla 



L. attenuata Cololejeunea Rossettiana 



Plagiochila asplenioides Lejeunea carifolia 



Leptoscyphus Taylori Microlejeunea ulicina 



Lophocolia cuspidata Frullania Tamarisci 



L. heterophylla 



To Mr. Milsom's list may be added Plagiochila spinulosa. 



Lichens. — Mr. W. E. L. Wattam, in reporting his observations, 

 says there is no better testimony to the purity of the atmosphere of Dent 

 than the lichen flora which gives the stone walls and the tree boles a 

 picturesque appearance. A rough surs'ey of the walls, built of mountain 

 limestone and rocks of the Yoredale series, within a radius of one mile- 

 of the village, yielded the following species : — 



Xanthoria parielina Lecanora parella 



X. nlothrixva.T.virella L. dispersa 



Pannaria rubiginosa Acarospora fuscata 



Parmelia conspersa Cladonia pyxidaia 



Squammaria saxicola C. fimhriata 



Placodium sympageum Lecidia lucida 



Callopisma vitellinum L. rivulosa 



Lecanora atra L. coarctata 

 Biiellia canescens 



Equally at home on the walls, and on the boles of Sycamore, Ash, 

 Mountain Elm, Alder, Lime, and Oak, were the following species : — 



Platysma glaucum Parmelia caperata (not common) 



Evernia furfuracea P. fuliginosa var. laetvirevs 



Parmelia perlata P. physodes and f. labrosa 



P. saxatilis and f. furfuracea 



Lecanora varia Pertusaria communis 



Naturalist 



