SOME FUNGI GROWING BOTH ON CONIF- 



EROUS AND DECIDUOUS TREES 



Lars Romell 



In Murrill's tenth article on the Polyporaceae of North 

 America, it is stated that Daedalea unicolor* has no choice be- 

 yond deciduous wood as regards host. As a rule this is certainly 

 true, but there is no rule without exception. I have seen this 

 species growing on Pinus abies L. {Pice a excelsa Lk.) at least 

 two or three times in different places here at Stockholm, but 

 not abundantly. As the fact struck me, I made myself quite 

 sure of the correctness of the observation. 



Among other species occasionally met with on Pinus abies, 

 although generally growing on leaf trees, I will mention Poly- 

 porus zonatus, which I have seen but once, and Polyporus 

 adustus, which I have seen some few times on our Swedish 

 spruce, while both are very common and abundant on their ordi- 

 nary hosts. 



If Pomes Hartigii of Allescher and Schnabl (Ochroporus 

 fulvus Schroeter) is really identical with Pomes robustus 

 Karsten, which latter is frequent on living oak trees at Stock- 

 holm, this might be another example of host change, as Pomes 

 Hartigii is said to grow on Abies. It is asserted positively that 

 Polyporus fumosus (which also parades under the name of P. 

 holmiensis, P. salignus, P. scanicus, etc.) has been collected on 

 Pinus silvestris in Germany. I have seen it only on deciduous 

 trees. 



Polyporus giganteus I have met with but twice in Sweden. 

 The first time I got it from an oak in Omberg (July 13, 1889). 

 The other time (October 16, 1904) I saw it here at Stockholm 

 growing amongst grass on the ground, but fixed to a stump nearly 

 concealed in the earth. So far as I could see, this stump was the 

 remainder of a tree of Pinus silvestris, which species also grew 



* For convenience I use here the old familiar names. 



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