BOTANY 



LECANO-LECIDEII (continued] LECANO-LECIDEII (continued] 



Pertusaria globulifera, Turn. ) Shiere Lecidea effusa, Sm., var. caesiopruinosa, 



Phlyctis agelaea, Ach. J (J. M. C.) Mudd. Shiere (E. C.) 



argena, Ach. Hademere (J. M. C.) tantilla, Nyl. Reigate (W. J.) 

 Urceolaria scruposa, L. Kew Gardens GRAPHIDEI 



(J. M. C.), Leatherhead (E. M. H.) Graphis inusta, Ach. Shiere (E. M. H.) 

 Lecidea ostreata, Hffm. \ ^ ere ( M H ) Opegrapha herpetica, Ach. Shiere (E. C.) 



lucida, Ach. / * ' varia, Pers., f. tigrina, Ach. Coulsdon 



spododes, Nyl.l p , . /T r> \ (W. B.) 



L- -o [ Shiere (E. C.) * , ' , ,. , _, . 



dubia, Borr. i prosodea, Ach. Shiere (E. C.) 



quernea, Dicks. Shiere (E. M. H.) viridis, Pers. \ Sturt 



canescens, Dicks. Leatherhead (E.M.H.) Arthonia astroidea, Ach. / (E. M. H.) 



Lightfootii, Sm. Reigate (W. J.) ; PYRENOCARPEI 



Hademere (E. M. H.) Normandina laetevirens, Turn., Borr. Esher 



denigrata, Fr. Esher (W. B.) (Mr. Turner) 



cyrtella, Ach. Shiere (E. C.) Endocarpon hepaticum, Ach. Croydon 



Caradocensis, Leight. Wonham (W. J.) (Mr. Dixon) 



Naegelii, Hepp. Shiere (E. C.) Verrucaria margacea, Whlnb. Hindhead, 



aromatica, Sm. Leatherhead (E. M. H.) and near Abinger (W. B.) 



milliaria, L., f. saxigena, Leight. Leith sparsula, Nyl. Dorking (W. J.), Gams- 



Hill (W. J.) tall (E. M. H.) 



sabuletorum, Flk. , . /jr p \ punctiformis, Ach. Shiere (W. C.) 



endoleuca, Nyl. I v olivacea, Borr. Shiere (E. C.) 



lubens, Nyl. Shier? (]. M. C.) nitida, Weig. -) Leatherhead 



muscorum, Sm. Shiere (E. M. H.) rupestris, Schrad. J (E. M. H.) 



It will be observed from the above list that the Surrey lichen-flora is 

 richest, so far as it has been investigated, in those species which are 

 found on old trees and palings, and in the jelly lichens found in chalky 

 districts, whilst those growing on sandstone rocks and limestone walls 

 are comparatively few in number. The genus Cladonia is represented 

 only by a few species. There can be hardly any doubt that when the 

 damp heaths so numerous in the county and the stony districts of the 

 Upper and Lower Greensand have been more thoroughly explored, the 

 list of species might be very considerably extended. 



Sub-alpine lichens are practically not represented at all in Surrey, 

 probably owing to the absence of suitable localities. In the neighbouring 

 county of Kent these species are chiefly confined to the sea beach at 

 Lydd, where many lichens common to mountainous or sub-alpine and 

 maritime districts occur. 



The exploration of parks and woods containing very old trees would 

 probably also add a considerable number of species, as well as the stony 

 southern sides of the high hills overlooking the weald, as at Leith Hill, 

 Ewhurst and Black Down. 



THE FUNGI 



The occurrence of fungi in any given locality depends almost entirely 

 on the relative abundance of the higher forms of plant life, since it is on 

 these latter that the fungi are dependent for food ; some kinds, as rusts, 

 mildews, smuts and bunts, attack living plants, causing in many instances 

 serious injury when they appear as a widespread epidemic on cultivated 



63 



