APPENDIX. 405 



Teichocolea tomentella, Nees. Wood between Higligate and Hcrnsey ; 

 Budd. MSS. 



Ptilidium ciliare, Nees. By water running through Old-Fall Wood, be- 

 tween Highgate and Muswell Hill, Mr. Dandridge ; B. Syn. iii. 111. 



Mabtinellia complanata, Gray. (Eadula, Bum.) Pinner Wood ; Hind. 



Feullania dilatata, Nees. Harrow ; Hind. 



? F. Tamarisci, Nees. Hampstead ; Burnett 105. 



FossoMBEONiA _pem//a, Nees. Bishop's Wood, Mart3rii; B. G. 413. 



Pellia calt/cina, Nees. Harrow ; Hind. 



P. epiphylla, l!iees. Hampstead; Burnett 105. Harrow Weald Common ; 

 Hind. 



Bi.AsiA pusilla, L. On Hounslow Heath; Huds. ii. 519. 



RiccAEDiA multifida. Gray. ( Aneura, i^wm.) Cane Wood, Doody ; Huds. 



i. 437. 

 Metzgeeia fiircata, Nees. In a deep dry ditch between ' Mother Huff's' and 



Cane Wood, Hampstead ; Budd. MSS. 



Anthoceeos punctatus, L. On Hounslow Heath; Huds. i. 519. About 

 London; E. B. 1537. 



MABCHA'^ITIACEM. 

 Maechantia polymorpha, L. Hampstead Heath. Bishop's Wood. 



RICCIACEM. 



EicciA fluitans, L. Pinner ; Harrow ; Hind. Pond in the meadows be- 

 tween Bishop's Wood and Finchley, 1866, abundant; Davies. Pond 

 on Hadlej Common ! ; Warren. 



III. CHAEACE^. 



Chaea flexilis, L. Ponds at Hendon ; QueJcett. Near Hornsey ; Hiuls. i. 



399. 

 C. syncarpa, Tbuill. Ruislip Reservoir, 1861 ; Hind. 

 C. troMslucens,Vevs. Stanmore Heath, 1827-30 ; Varenne. 

 C. vidgaris, L. Woodridings, Pinner ! ; Roxeth ; Apperton ; Hind. Isle 



of Dogs ; ponds at Netting Hill ; Quekett. Kilburn ! ; Warren. 

 C. hispida, L. Finchley Common, not uufrequent, J. Woods ; B. G. 399. 

 C. fragilis, Desv. Pinner Hill ; Kastcott ; Ruislip Reservoir ; Hind. 



IV. LICHENES. 



BY EEV. JAMES M. CEOMBIE, M.A., F.L.S. 



The county of Middlesex is by no means rich in Lichens. In fact, it is 

 the very poorest of any county iu Great Britain. The dense and smoky 

 atmosphere surrounding the metropjlis is very unfavourable to the growth 

 of this order of cryptogams. Hence it is that the old trees in the parks, 

 which might be expected to yield a fair number of species, present but very 

 scanty traces indeed of any lichen vegetation. Nor even in the remoter 



