647 
Trichogyne of no raorphological vaine ; absence in some Ban- 
giace88 explicable by superficial position of thè numerous carpogonia. 
10. Fertilisation essentially thè same in thè two groups. 
11. Carpospores usually formed as 11. Carpospores 1-8, not so ar 
end-cells of filaments radiating ranged. 
from thè centrai celi of thè 
cystocarp. 
Difference of arrangement of carpospores a question of nutri- 
tion , facility of formation , and distribution of spores. 
The Lahoratory, Glasnevin, 
