475 
the young plants in Oedogonium. 
a large number of species of Oedogonium h Hence it is sur- 
prising that I have not come across this type in the course of 
my investigations ; possibly, however, it only develops under 
certain external conditions. 
Fig. 26. a, b , Oedogonium capillare , Kiitz. a. Base of a six-celled filament, 
showing rhizoid ; the green matter extends down a considerable distance into it. 
b. Filament of young plant with swollen apical cell, active cap-formation going on 
in the cell below, c. Oedogonium curdiacum , Wittr., two-celled plant ; the first 
cap has been thrown off and lies loosely at the apex. d. Oedogonium stagnate, 
Kiitz, young two-celled plant, which is already forming spermatozoids. ( x 375.) 
Lemmermann (’98, p. 502 ) mentions the occurrence of 
chlorophyll in the hemispherical basal cells of Oed. africanum , 
Lagerh., and spirogranulatum , Schmidle. I have not in- 
frequently observed small amounts of chlorophyll in the 
1 Such young plants differ from all I have described above in that the 
attaching portion consists of an entire cell and not of only the lowermost modified 
portion of a cell. 
