358 
Burt. — The Development of 
the line S, Fig. 8, had to be drawn from another section in 
the same series. The outer portions of the section have been 
omitted in the figure. 
The gleba and its relations to the intermediate tissue A are 
of especial interest. The separation of the gleba from the 
intermediate tissue A, in progress in Fig. 5, is now more 
complete, and has resulted in the formation of a cavernous 
space, shown in Fig. 8. Some feeble hyphal connexions still 
remain between the projecting lobes of the gleba //and the 
tissue A. In some of the furrows of. the former structure, 
hyphae are seen in a position suggesting their having been 
pulled away from the tissue A, in the movements which 
brought the portions of the hymenial surface to which they 
were attached to the bottom of the furrows. The formation 
of the cavernous space may be due to a very vigorous growth 
of the dome-shaped gelatinous layer of the volva, which, by 
becoming a portion of the shell of a sphere of greater diameter, 
would tend to pull tissues attached to it laterally away from 
the central axillary core of tissue more firmly attached at 
top and bottom. 
The formation of the folds of the hymenial surface was 
stated by Ed. Fischer, in his study of Ithyphallus tenuis , to 
be due to the repeated formation of new basidia, which 
crowd their way to the hymenial surface, pushing in between 
basidia already lying in that surface h The steps leading 
to such an increase in the hymenial surface are shown in 
Fig. 6. 
The rudiment of the wall of the stipe is thicker and denser 
than in the preceding stage. A portion of the rudiment from 
another egg in about the same stage of development as that 
of Fig. 8 is shown in Fig. 9. Ed. Fischer has found in 
/. tenuis 2 and in /. impudicus 1 2 3 , a loose tissue with numerous 
spaces between its hyphae, forming a clear zone between the 
1 Ed. Fischer, Zur Entwicklungsgeschichte der Fruchtkorper einiger Phal- 
loideen. Annales du Jardin Botanique de Buitenzorg, Vol. vi, 1887, p. 10. 
2 L. c. 1887, p. 8, fig. 8. 
3 L. c., 1890, p. 25, fig. 22. 
