135 



A NEW MYCENA. 



By A. A. Pearson, F.L.S. 



Mycena epipterygioides n.s. 



Macroscopic features. Cap membranaceous, greenish yellow, 

 depressed in centre, which is usually a little darker; persis- 

 tently hemispherical, striate or sulcate, edge sometimes crenate, 

 pellicle separable, viscid, average dia. lo to 15 mm. sometimes 

 much larger. Gills white at first, then a delicate greenish 

 yellow, adnate with a decurrent tooth, rather distant, alter- 

 nate long and short. Stem cylindrical or compressed, viscid, 

 hollow, greenish, usually with reddish stains at base. Average 

 length about 6 cm., dia. about 2 mm. Spore print white. 



Microscopic characters. Basidia about 30 x 61 fx with two 

 sterigmata only which are very prominent. Spores hyaline, 

 broadly elliptical g-io x yi-S/x, contents granular. Gill edge 

 with finely ciliated brush-like cystidia ; on gill face there are 

 no cystidia. 



Habitat. In damp places among moss in pine woods. 

 Common in late autumn in the pine woods of Oxshott and 

 St. George's Hill, Surrey. Usuall}^ growing in groups, but not 

 fasciculate. 



Doubtless this common species is familiar to many myco- 

 logists, who may have listed it as a green variety of Mycejia 

 epiptcrygia (Scop.) Fr., to 

 which it is closely related. 

 It will, howe\'er, be found 

 quite distinct in many 

 features. The microscopic 

 characters are especially 

 interesting. At first it 

 seemed that the cystidia 

 might be due to the puck- 



ermg ol the viscid thread Mycena epipterygioides. Basidia, spores, 

 on the gill edge. This edge and cells from removable edge of gill. 



can easily be removed 



with a needle, and then there are no cystidia \'isible, the 

 2-spored basidia being clearly defined on what might be thought 

 to be the real gill edge. Specimens were submitted to Miss 



