PSILOCYBE 363 



preceding on living trunks of birch, alder, willow, beech, 

 apple. On Ailanthus glandulosa in the Berlin Botanic 

 Garden. 



Pholiota adiposa (Fr.). Not uncommon on living trunks of 

 alder, birch, elm, willow, beech, oak, and apple. 



Pholiota spectabilis (Fr.). On stumps and roots of alder and 

 oak. Probably a root parasite. 



Pholiota destruens (Brond.). Avery destructive parasite on 

 poplars ; also attacks birch and willow. 



Pholiota mutabilis (Schaeff.). Pre-eminently the stump 

 fungus present on stumps of various trees, as beech, oak, birch, 

 alder, willow, and maple; sometimes on living trunk and root 

 of beech. 



Pluteus cervinus (Schaeff.). On stumps of various broad- 

 leaved and coniferous trees, especially Scots fir, where it 

 sometimes occurs in abundance on the living trunk. 



The white variety, rigens, occurred on birch, and growing 

 out of wounds on an oak trunk. 



Volvaria bombycina (Schaeff.). In Berlin Botanic Garden 

 in a hollow trunk of Acer dasycarpum ; also on trunk of 

 Populus canadensis. 



Pleurotus ostreatus (Jacq.). On living trunks of various 

 kinds of broad-leaved trees. 



Pleurotus salignus (Pers.), as also the previous species, on 

 living trunks of various willows, birch, poplar, alder, and on 

 stumps of Robinia and mulberry. 



Pleurotus ulmarius (Bull.), especially on living elm trunks. 

 Schroter says it also occurs on lime trunks. 



Several other species of Pleurotus also occur on living 

 plants, as P. atrocoeruleus (Fr.) on willows and mountain 

 ash ; P. 7ii it is on Scots fir ; P. corticatus (Fr.) on poplars ; 

 also growing from wounded places in trunks of Oslrya 

 virginiana and Sophora japonica, in the Berlin Botanic 

 Gardens. 



Collybia velutipes (Curt.). On stumps of very many kinds 

 of broad-leafed trees ; also abundantly on living trunks of 

 willows, birch, oak, alder, lime, beech, poplar, elm, horse- 

 chestnut, etc. The willows in the Berlin Botanic Gardens 

 are badly infested with this fungus. 



Tricholoma rutilans (Schaeff.). On stumps and roots of 

 Scots fir ; also on living trunk of same tree. A root parasite. 



Armillaria mucida (Schrad.). On living trunks and 

 branches of beech. 



