Crosshnid and Xeedham : The Plants of Peckei Wood. 173 



holding- their ground best ; they often overrun and choke beds 

 of Tetraphis pelhicida, Lepidosia reptans, and other mosses and 

 hepatics. They are :— 



Cladonia pyxidata, also Cladonia dig-itata and 



var. finibriata. van macilenta. 



Cladonia cornucopiodes. 



In decaying moss are : — 



Collema pulposum, Lecidea sabuletorvim. 



Spreading among ling, etc. :— 



Peltigera canina. Peltigera rufescens. 



On rocks, walls, etc. : — 



Parmelia physodes. Lecidea vernalis. 



Parmelia saxatalis. Lecidea contigua. 



On dead bilberry stems : — 



Leconora conizea. 



On bark of elder, oak, birch (on the rugged cracks at base 

 of trunk) : — 



Leconora varia. 



Parasitic on the thallus of Lecidea configua : — 

 Verrucaria gemmifera. 



Fungi. — The fungus flora is a much more mysterious business 

 than that of any other branch. One might search the place for 

 a lifetime, and, if it remained damp and shady, meet with some- 

 thing fresh every season. On the other hand, some species ma}- 

 be seen in plenty one season and never met with again. The 

 majority of fungi are of necessity migratory. Being dependent 

 on organic matter for their existence they must go where the 

 kind they want is. If their particular host or habitat ' gives 

 out' in one place they must seek it in another. This they are 

 enabled to do by aid of the enormous number of spores each 

 one produces. Onygena pilogena managed to find an old felt 

 hat and the rotting cloth hearthrug in Pecket Wood, and an old 

 worsted stocking in a field corner at Barkisland, nine or ten 

 miles away ; we have never seen it anywhere else, and only at 

 these places in two seasons, 1894 and 1897, respectively. 



The number of species of fungi found within this 35 acres 

 of woodland is 281, in addition to eight or ten still undetermined, 

 besides a few omitted found on the low side of the Hardcastle 

 Road, practically 300. 



We think it best to give a classified summary of the list, 

 with the number of saprophytes and parasites in each section ; 

 also the number found on each kind of habitat or host, rather 

 than in specific detail. 



1904 June J 



