16 STUDIES OF AMERICAN FUNGI. 



the shelf was brought into a perpendicular position. The fungus 

 continued to grow, but its substance being hard and woody it cannot 

 turn as the mushroom can. Instead, it now grows in such a way as 

 to form several new caps, all horizontal, i. e., parallel with the sur- 



Plate 3, Figure i6. Dsedalea ambigua. Upper right-hand shows normal plant in 

 normal position when on tree. Upper left-hand shows abnormal plant with the 

 large cap in normal position when growing on standing tree. Lower plant shows 

 same plant in position after the tree fell, with new caps growing out in horizontal 

 direction. (Lower plant 1/2 natural size.) 



face of the earth, but perpendicular to the old shelf. If the page is 

 turned one-fourth way round the figure will be brought in the 

 position of the plant when it was growing on the fallen log. 



