Mycological Bulletin 



Nos. 61-62 



IV. A. Kcllcnnaii, Ph. D., Ohio State University 



Columbus, July, igo6 



EDITOR'S NOTES. 



Settled. — The prolonged consideration of the postal status 

 of the Bulletin is happily terminated as the second-class entry 

 note on the cover indicates. We had always considered our matter 

 second class but the authorities were disposed to rate it hig'her ! 

 r>ut the red tape has all been unwound and we can mail the 

 Bulletin hereafter without embarassment. 



Fir.UREs AND Text. — Some variation in matter as well as 

 illustrations will be seen — for example we have drawn on Pro- 

 fessor Atkinson's excellent book for a note on the uses of 'Mush- 

 rooms ; then the peculiar growths on the common Hackberry tree 

 are illustrated — where a fungus (though not called a Mushroom) 

 is concerned as one of the causes. 



The Fungus of the Hackberry Branch-Knot. — The 

 Witches' Brooms, as they ma)- be called, which are so common on 

 the Hackberry tree, illustrated in Figs. 193 and 194. are caused 

 by a mite (of the genus Phy-top-tns) and a Leaf-^lildew fungus 

 associated. The distortion consists of multiplied branchlcts due to 

 the irritation of the two organisms. The explanation under the 

 cuts (especially under Fig. 192) is perhaps all that is needed at 

 present. 



AN INTERESTING CORDYCEPS. 

 M. E. Hard. 



CoRDYCEPs is from a Greek word meaning a club and a Latin word 

 meaning a head. This is a genus of Pyrenomycetous fungi of which a few 

 grow upon other fungi and grasses hut by far the greater numlier are para- 

 sitic upon insects or their larva. 'Ilic larva stage suffers most frequently 

 frojn the parasitic fungi. 



There are two species of Cordyceps found in the woods or wooded 

 places of great interest to the mycologist. They are parasitic on Klaph- 

 ti^myces which are truffle-like growths found in soils. They are Cordyceps 

 CSphioglossoides, Adder's 'iongue Cordyceps and Cordyceps capitata. The 

 Cn»otato-like growth upon which thej^ are found and the form of the fruiting 

 'tody as indicated by their specific names, will clearly identify them. 

 ^^ Plant lice and flies suffer from attacks of fungi. The common house 

 ^ly will frequently be seen hanging to the window pane surrounded by a 

 __lrisible halo of fungus spores which have been thrown from the fungus 

 I^iacs and caught on the glass. .A great portion of which were thrown into the 



