Sieg ees RO SE aL Sa aka al i a a a 
1896 | CERTAIN PYRENOMYCETOUS FUNGI 317 
forms having more or less complete sexuality and the Teicho- 
spora where all trace of an antheridium has disappeared. 
Teichosporella exhibits another peculiarity in the develop- 
ment of the ascus. Instead of an evenly granular protoplasmic 
content filling the ascus from the time of its origin, there exists 
here, at first, an apparently empty sac formed, not by the swelling 
of a cell as in Teichospora, but as a papillate and then somewhat 
inflated outgrowth from a cell. Into this sac the protoplasm 
seems to push its way through a comparatively narrow opening 
atthe base. The process may be understood best by reference 
to figs. 22 to 26, in which successive stages of the process are 
shown. The same conditions were found in the living material, 
hence it could not have been due to the action of reagents. The 
appearance may be due to an abnormal swelling of the ascus 
wall which recedes with its growth, or to the presence in the 
young ascus of a non-chromatic plasma or cell sap. At certain 
stages a zone of this same colorless sap may be seen enveloping 
the spores (figs. 25 and 26) after the ascus itself has become 
filled with the normal protoplasm. 
The nuclear processes in this species agree, so far as studied, 
With those in Teichospora, but the work on this form was not 
repeated with the better stains and higher magnification used in 
the later work on Teichospora. 
The development of the sporocarp as above given for these 
two genera is indeed widely different from any process hereto- 
fore described for the perithecia of any of the Pyrenomycetes. 
It . interesting to note, however, that it corresponds very closely 
with what has frequently been described as the normal course of 
development of pycnidia. This and the apparent loss of sexual- 
ity here Suggests that these may be more degenerate forms than 
Some others, and further that extreme degeneracy leads to the 
Production of pycnidia only, these last named fruit forms being 
merely reduced perithecia. 
CERATOSTOMA BREVIROSTRE. 
This fungus was found growing upon decayed mushrooms 
x ee : 
garden near the university. In artificial cultures it produced 
in 
