tgtt] ATKINSON—DICTYOPHORA AND ITHYPHALLUS 7 
figures can be distinguished as a more deeply staining layer within 
the thin membrane of primordial tissue lying between the stipe 
and pileus, joining the stipe at the projecting ring of the same near 
the apex of the stipe at the corresponding point where the indusium 
of Dictyophora duplicata joins the stem. These facts lead me to 
believe that the fundaments represented by the more deeply stain- 
ing zone in the young fruit body should be interpreted in accordance 
with their treatment here. 
Another peculiar structure sometimes appears at this stage. It 
lies in the lighter colored zone (figs. 19, 20), and in stained longi- 
tudinal sections appears as a delicate line, deeply stained, lying some 
distance from the fundament of the stem wall, but diverging 
from it and not presenting the curved contour of the other zones. 
The walls of the hyphae appear to be slightly gelatinized or thick- 
ened and take the stain deeply. Perhaps it represents the begin- 
ning of a partial degeneration of the fundamental tissue which 
does not take part in the formation of any of the members of the 
plant. Orit may represent a very slight tendency to the formation 
of the pseudoparenchymatous tissue of an indusium such as exists 
_ in a well developed form in Dictyophora, since this structure lies 
close to the fundament of the indusium. 
The fundament of the gleba now gives rise upon its inner face 
to a palisade layer of slender clavate cells. This layer, as it pro- 
gresses, develops unevenly, forming numerous folds, with furrows 
between them, which branch profusely as they extend inward 
toward the forming pileus. Figs. 19 and 21 are from a section, nearly 
longitudinal, which shows the partially developed members of the 
plant; D is the inner peridium of the volva, G is the developing 
gleba, P is the forming pileus, A is the apex of the stipe, while 
I is the fundamental tissue between the stipe and pileus. At 
maturity this fundamental tissue lies between the stem and pileus 
as a thin, delicate, membranous layer, which also extends below 
the pileus around the lower end of the stipe. This is undifferenti- 
ated tissue. As the stem elongates and the pileus expands some- 
what, this delicate membrane or “‘veil’’ is torn and fragments are 
left on the surface of the stem, and occasionally some of them on 
the inner surface or margin of the pileus. These fragments often 
