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BULLETIN 1037, U. S. DEPARTMENT OF AGRICULTURE. 
Ceratostomella. During the extensive culture work of Hedgcock, 
however, extending over a period of four or five years and involving 
Fig. 2.—Mycelium and fruiting bodies of “ blue-stain ” fun¬ 
gus: 1, Tangential section of “blue” wood; 2, cross sec¬ 
tion of “ blue ” wood; 3, cross section of pith ray; J,, 
young fruiting body of the “ blue-stain ” fungus ( Cerato- 
stomella fiUifera) ; 5, mature fruiting bodies of the “blue- 
stain ” fungus ; 6, two fruiting bodies of the “ blue-stain ” 
fungus; 7, two spore sacs with spores of the “ blue-stain ” 
fungus; 8, spores of the “ blue-stain ” fungus; 9, top of 
beak of fruiting body of Ceratostomella pilifera just after 
the discharge of the spore mass. (After Von Schrenk 
(32), pi. 7.) - 
a number of species of Ceratostomella from a variety of sources, no 
Grapliium stage of this fungus was ever reported. 
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