86 Forty-first Annual Report on the 



Solenia villosa, Fr. var. polyporoidea. 



At first grauuliform, then cylindrical, often crowded and forming a 

 continnous pure white stratum, appearing like a resupinate Polyporus, 

 the villosity scarcely visible to the naked eye, but percei^tible with a 

 lens. 



Decayed wood of hemlock. Adirondack mountains. July. 



This differs from the tj'pical form in its crowded mode of growth. 

 Is it, therefore, a distinct species? 



Clavaria stricta, Pers. var. fumida. 



The whole plant is of a dingy, smoky-brownish hue. Otherwise as 

 in the typical form. Catskill mountains. September. 



In the fresh state the specimens appear very unlike the ordinary 

 form, but in the dried state they are scarcely to be distinguished-. 



Geoglossum microsporum, G. & P. 

 A rare si^ecies, not observed since its discovery in 1871, till it was 

 again found this year in the Catskill mountains. 



(E.) 

 FUNGI DESTEUCTIVE TO WOOD. 



Note. — P. H. Dudley, C. E., has investigated the action of certain 

 fungi upon railroad ties and wooden structures. At my request he 

 has communicated to me some of the I'esults of his investigations. 

 These results are of such great practical and economic importance, 

 that with his permission, I have added to this report a copy of his 

 communication. 



G6| Pine Stkeet, New York, December 5, 1887. 



Prof. Chakles H. Peck, State Botanid: 



My Dear Sir. — The well established fact that the decay of all 

 timber, under ordinary usages, is due to the growth of many sj^ecies 

 of fungi, gives to your long and patient work, in collecting, identify- 

 ing and calling attention to different species, a value and bearing 

 of practical importance hardly expected a few years since. The 

 enormous annual consumption of timber by railroad companies, ship- 

 builders, architects, manufacturers and farmers, in conjunction withj 

 the decreasing supply and increasing cost, gives value to any knowl- 

 edge which Avill help check any unnecessary decay of timber. 



The experience gained from the failures of many of the expensive 

 efforts to preserve timber has shown that si^ecific knowledge of th« 



