30 
Ohio Biological Survey 
EXPLANATION OF PLATES I AND II 
The figures are intended primarily to illustrate some types of female reproduc¬ 
tive tracts in ascomycetes. The magnification is given wherever this datum was 
available. 
PLATE I 
Fig. 1. Three archicarps of Pyronema confluens with spheroidal, one-celled 
ascogonia surmounted by one-celled trichog>nes. Each trichogyne tip is in contact 
with an antheridium. From Harper. 
Fig. 2. A transverse section of an archicarp of Lachnea stercorea. The one- 
celled ascogonium is at the left and passes into the several-celled trichogyne, which 
extends to an antheridium at the right above, x 600. From Miss Fraser. 
Fig. 3. A section of a leaf showing the coiled archicarp of Polystigma rubrum 
and the vegetative hyphae which pass through the stoma, x. 900. From Blackman 
and Welsford. See also the discussion of Nienburg’s results on this plant. 
Fig. 4. A reconstruction from sections of Laboulbenia chaetophora to show 
the complete outer wall of the perithecium, one cell of the inner wall, the enclosed 
ascogonium surmounted by the trichophoric cell, and the terminal, branched tricho¬ 
gyne. X 450. From Faull. 
