43 8 B tiller. — Reactions of Fruit- Bo dies of Lentimis lepideus , Fr. 
a right angle so as to place their axes parallel to the incident rays. The rods r and s had withered 
up and are directed as were the rods o and p before the change in the direction of the light. The 
rod p has developed an abortive pileus. The rods t, v , w, &c., grew out from the block after 
the light had been changed in direction. 
Fig. 23. Nat. size. Another heliotropic experiment. The rod first grew from the block Bl, 
so as to place itself parallel to the incidental rays of light which had the direction indicated by the 
arrow a. When the rod had attained the length ll, the block was turned in a horizontal plane 
through two right angles, so that the light came to have the direction indicated by the arrow b. 
The rod gradually grew in a curve so as once more to place its axis in the direction of the incident 
rays. 
Fig. 24. Nat. size. A rod which grew for three months towards weak light without forming 
any pileus. 
Fig. 25. Nat. size. Drawing of monstrosity shown in Fig. 19. For convenience the centre 
part of the rod has been represented straighter than it actually was. For the exact shape see Fig. 19. 
The monstrosity had grown for nine weeks in the dark. There is no trace of a pileus. w, part 
of wooden block ; m, mycelial layer; c, another monstrosity cut off. 
Fig. 26. Nat. size. Section through a fruit-body, the pileus of which is very unequally de- 
veloped. The gills are longest on what was originally the under side of the stipe. On the opposite 
side the gills have not grown beyond the most rudimentary stage. 
Figs. 27-30. All nat. size. Branched monstrosities, produced in weak light. 
Fig. 27. The pileus touched the glass of the damp-chamber at i, and ceased its development. 
Some days afterwards branches began to grow out of the stipe at s. 
Fig. 28. The fruit-body produced a rudimentary pileus with abortive gills at p x and a stipe A 
From the edges of the pileus new branches ( s 5 ) were developed. Some of them produced rudimentary 
secondary pilei (/ 2 ) upon secondary stipes (.r 3 ). One stipe (j 2 ) gave rise to a tertiary stipe (s 3 ) upon 
which a rudimentary tertiary pileus (p 3 ) was formed. The fruit-body was growing for about four 
months. 
Fig. 29. The primary stipe ( s l ) produced the primary pileus ( p ! ). The latter became abortive. 
Secondary stipes (j) arose from its edges and produced secondary pilei (p 2 ). 
Fig. 30. Another branched monstrosity. 
