FISTULINA HEPATICA (Figs. 219, 220, and 221.) This is 

 the original and only species of Europe, and is more frequent in Eu- 

 rope than with us. It grows on the oak (Quercus) in Europe, but 



Fig 219. 



Fistulina hepatica, natural size. 



with us I think is usually found on the chestnut (Castanea). 7 It is 

 a rather tough, juicy, fleshy plant, red and a section of the plant shows 

 a variegated color, streaked with darker red lines. 8 It is a striking 



7 It is apparently absent around Cincinnati where we have oaks but not chestnuts, but I 

 have collected it in Pennsylvania where Dr. Herbst told me it was found only on chestnut. 



8 1 am satisfied that the red color is due to the action of the air on some chemical principle 

 in the plant. The flesh of the very young plant is white but quickly turns red on exposure to 

 the air. 



