340 Fetch : Some Holderness Myxoniycetes. 



The first specimen was Dictydicethalium plumbewn Rost., 

 gathered on hawthorn branches hi a dead fence near the Humber 

 Bank on 24th December. On 26th December a ' stick-heap ' 

 within the borougfh, consisting- of branches from the elms of the 

 adjacent rookery and tree trunks from the adjoining- fields 

 yielded Badhamia macrocarpa Rost., Physaruni nutans Pers., 

 Physarinn compressiini Alb. & Schw. , Trichia varia Pers., Mar- 

 garita metallica Lister, all on elm ; Dictydicethalium plumhetun 

 Rost., on hawthorn ; Perichcena depressa Libert, on ash ; Didy- 

 mium difforme Duby, on nettles ; and a decayed ash in a hedg-e 

 g-ave Comatricha obtiisata Preuss, and Perichcena populina Fries, 

 in abundance. 



On 29th December, a fallen willow, aslant a ditch, at Rose 

 Hill, provided Ste^yionitis fusca Roth., Comatricha obtusata Preuss, 

 Cribraria aurantiaca Schrad. , Protrichia flagellifera Rost., Mar- 

 garita metallica Lister, Trichia varia Pers. on a decaying 

 fungus ; and a group of old willows, surrounded by decaying 

 branches, near Newton Garth, yielded Co7natricha obtusata 

 Preuss, Physarum nuta^is Pers., Trichia varia Pers., Proto- 

 trichia flagellifera Rost. abundant, Margarita metallica Lister, 

 Arcyria pnnicea Pers., A. flava Pers., A. albida Pers. on 

 worked wood, and two other doubtful species. 



On ist January 1903, I found that the 'beading,' or make- 

 shift fence of dead thorns, often built to protect a recently-cut 

 hedge, formed an admirable substitute for the heaps of leaves 

 and twigs of more wooded districts. All contained the ever- 

 present three which head the last list ; whilst one, older than 

 the others, gave in addition Choiidrioderma radialum Rost., two 

 sporangia; Dictvdicet/ialijim plumbeiun Rost., on hawthorn; 

 Licea flexuosa Pers., abundant on worked wood ; Etiteridium 

 olivaceum Ehren., Trichia fallax Pers. ; Arcyria albida Pers., on 

 worked wood ; A. incarnata Pers., on worked wood ; Margarita 

 m-etallica List., Prototrichia flagellifera Rost. 



Up to this date the weather had been very mild ; Myosotis 

 palustris, Alliaria, Heracleiim, Anthriscns sylvestris, Bel I is, 

 P. acris, and Geranium dissectum were in flower on 27th Dec. ; 

 but now the delayed frost killed the immature Myxomycetes and 

 made further search somewhat suicidal. On 3rd January, how- 

 ever, Perichcena variabilis Rost. and Didymium diflForme were 

 found in abundance on poplar and hawthorn leaves by the road- 

 side in the town, apparently just developed. Some of the 

 PerichcBna had ripened on feathers. 



Naturalist, 



