4 BOTANICAL GAZETTE [juLy 
idee in that its fertile and vegetative hyphe are uniform, as 
well as from the fact that it is never even partially parasitic in 
its habit. The undifferentiated fertile branches end in a spheri- 
cal head, from which, as in some species of Syncephalis, the 
spore-rows radiate in all directions, forming an Aspergillus-like 
fructification. The spore-rows arise as cylindrical cells, formed 
by budding directly from this head, which normally contain at 
maturity a single row of superposed spores (fig. 3) resulting 
from the separation of the protoplasmic contents of each cell 
into a number of distinct portions corresponding to that of the 
mature spores. As far as has been seen, this separation appears 
to occur simultaneously, and not by gradual constriction, the 
successive masses becoming separated by a hyaline intersporal 
substance exactly similar in appearance to that which occurs in 
ordinary sporangia (fig. 7). After this separation has been 
effected, each mass surrounds itself with a wall visibly distinct 
‘from that of the cylindrical mother-cell (figs. 2-3), within 
which the spores thus formed are practically free. That this is 
the case is readily demonstrated by crushing the spore-rows 
under a cover glass, and in such preparations abundant instances 
may be observed in which the spores have been forced out of 
the sporangia, as the cylindrical mother cells must undoubtedly 
be called, which may thus be left wholly empty or but partly 
filled with spores that may lie more or less irregularly in its 
interior (figs. 2 and 4). By selecting a head not fully mature 
it is often possible by careful crushing to force all the spores 
out of the sporangia through their ruptured tips, leaving them 
empty but still intact and adherent to the fertile head. In 
nature the spores are freed by the eventual disappearance of the 
sporangium wall, which shrivels and breaks up without under- 
going the deliquescence characteristic of all other Cephalidex 
at this stage; so that the spores are dispersed in a dry condition 
instead of cohering in a viscous drop. The sporangial nature of 
the spore-rows is further shown by the fact that it is by no means 
unusual to find instances in which the spores are formed not in 
single rows, as in fig. 3, but more irregularly through the occur- 
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