

6 BOTAMCAL GAZETTE [july 



gradually into the large, long, flexuous hairs clothing the tip of 

 the young basidiocarp. Fig. 14 shows a slightly older fruit body 

 in which the gelatinization has progressed much farther, and in 

 which the glebal portion shows much more numerous intermycelial 

 spaces. 



Origin and development of peridioles. — The peridioles 

 originate in the peripheral portions of the glebal region. They 

 are distinguishable as spots where ends of filaments from all sides 

 converge round a common point, as seen in fig. 12, and more highly 

 magnified in fig. 25 in the region of intersection of lines from a to a. 

 This mode of origin has also been described by Fries (5) for 

 Nidularia. The convergence first takes place in a semicircular 

 manner, extending from the peridium inward toward the central 

 part (fig. 25), but very soon the circle is completed around a 

 common point of convergence. This region is surrounded by a 

 zone of closely interwoven filaments such as originally made up 

 the entire glebal region. A less dense zone with many intermycelial 

 spaces soon tends to form a definite layer within the interlacing 

 filaments, surrounding the converging filaments (except on the 

 under side toward the peridium), and a slightly denser tissue is 

 seen to the outside, which passes into the entirely undifferentiated 

 ground tissue. These faintly marked zones represent the pri- 

 mordia of the walls of the peridiole, while the more or less parallel 

 filaments which interrupt these zones on the under side, toward 



* 



the peridium, represent the primordium of the funiculus. 



The first peridiole to be differentiated is always near the base 

 of the glebal tissue. Other peridioles follow successively from the 

 base of the gleba upward, originating in the same manner from 

 parts of the glebal primordium near its outer part. In the mean- 

 time the glebal region has elongated greatly (fig. 13), new growth 

 taking place in an annular region near the apex of the fruit body, 

 where the primordium of the gleba merges with that of the peridium. 

 Fig. 16 shows a higher magnification of a part of the section seen 

 in fig. 13. All the region just described can clearly be differentiated 

 here. The densely interwoven filaments on the outside of the glebal 

 region mark the inner border of the peridium, as will be described 

 later. 



