44 



Mycologia 



According to Barlot (Compt. Rend. 171: 1014-1016. 1920), a 

 20-40 per cent aqueous solution of potash will distinguish Mycena 

 pur a from Lac carta laccata, the former giving a yellow and the 

 latter a dark-brown color. Gomphidius viscidus, when similarly 

 treated, gives a violet-brown color, while G. glutinosus yields a 

 pale-yellowish brown. 



Inonotus dryophilus was again fruiting on the white oak near 

 the waterfall in the hemlock grove late in October, 192 1. This 

 time there were two clusters of hymenophores almost touching 

 each other about two feet above the ground on the south side of 

 the tree. These clusters were each about five inches broad and 

 high, and projected about three inches from the trunk. 



Canvas-destroying fungi were discussed by J. Ramsbottom in 

 Nature (105: 563, 564. 1920), with various methods of inhibit- 

 ing their development and growth. Species of Macrosporium and 

 Stemphylium appeared to be the chief destructive agents, Soap, 

 followed by alum and copper sulfate, gave good results at Malta; 

 while sodium chromate proved superior in Saloniki. 



Dr. Whetzel has sent in a number of fungi from Bermuda, 

 among them Laetiporus sulphureus, Lepiota cretacea, Auricularia 

 nigrescens, Coriolus sericeohirsutus, Simblum sphaerocephalum, 

 Polyporus Bracei, Hydrocybe ceracea, and Hydrocybe Earlei. 

 The last is a very beautiful species described and previously known 

 only from Herradura, Cuba, where it grew in a pasture. Accord- 

 ing to Prof. Earle, the original collector, the colors become more 

 brilliant after drying. 



Coprinus micaceUs was abundant in the horticultural grounds 

 of the Garden on December 1. This was due to warm weather 

 and late fall rains following a period of dry weather. About the 

 middle of December several species of fleshy fungi were found 

 growing in the woods at Blacksburg, Bedford, and other localities 

 in Virginia. Pleurotus ostreatus and Collybia velutipes were 

 abundant and rather to be expected, but species of Cortinarius — 



