All Excursioji to Topcliffe^ Yorks. 



283 



much from its elephantine sulphur-coloured parasite, but, no 

 doubt, it eventually will. 



The apple trees in one of the gardens were badly infected 

 with the apple-tree canker— iVer/na ditissima. Several sickly 

 old trees were looked over, and this parasitic fungus was seen 

 to be at work, persistently sapping the remaining bit of life 

 out of them, while each year's crop of conidia and spores was 

 left free to spread the disease to healthy trees. This was 

 pointed out to the owner. When will people learn to make 

 some attempt to stop the spread of economic plant diseases ? 

 The currant bushes in the same garden were badly affected with 

 the bud-mite. The grubbing up and burning of the bushes, and 

 the liming of the ground for a season or two was suggested as a 

 remedy. The only response was a doubting shake of the head. 



A curious phenomenon was noticed in the Post Office 

 garden — a gooseberry bush growing out of an old apple tree, 

 four feet from the ground. Possibly a gooseberry seed had been 

 dropped in the axd of the forked trunk ; there germinated, and 

 the developing root found its way down the decayed interior 

 of the trunk, and thus reached the ground. 



So far as collecting was concerned, the results were most 

 satisfactory, considering the time of year. Of the 107 species 

 collected, 25 are new to the north-west division of the county, 

 and one — Rhaphidospora ulnaspora — new to Yorkshire. 



L. C. = Leckby Carr : B. W. = Brafferton Wood ; B. = 

 Brafferton ; M. G. = Myton Grange ; M. = Myton. The 

 following is the list of species collected : — 



Ithyphallus impudicus. On the 



ground, L. C. 

 Avmillaria mellea. Mycelium within 



the bark of a decaying stump, 



B. W. 



Collyhia tenacella. Among dead 

 cones and leaves in fir wood, 

 M. G. 



Mycena metata. Among dead twigs 



in neglected garden, B. 

 M. debilis. 



M. tenerima. Among twig debris 

 in neglected garden, B. 



Omphalia umhellifera. On heathy 

 ground, L. C. 



Pluteus phlebophorns. 



Entoloma seviceum. In pasture, M. 



Nolanea pascua. In pasture, B. ; 

 M. 



Galera tenera. In pasture, B. 



G. hypnorum. Among moss, B. 

 Bolbitius titubans. Among grass, 



road side, M. 

 Stfopharia ster cor aria. 

 S. semiglohata. Both on cow dung 



in pasture, M. 

 Hypholoma suhlateritium, M. 



H. epixanthum, M. 

 H. fasciculare. B. W. 



All on decaying stumps. 

 H. Candolleanum. On the ground 



among grass, hedge side, B. 

 PancBolns campanulatus. In pasture 



B. 



P. pmicola. On dung in pasture, 

 Anellaria separata. On dung hill, B. 

 Psilocyhe foenisecii. In pasture, M. ; 



1908 July I. 



