MOUGEOTIA 95 



conjugation scalariform; zygospores formed in the conjugating tube, 

 globose, 40-41^1 in diameter; spore wall smooth and indistinctly lam- 

 ellate; sporangial wall thicker at the ends of the tube. (PI. XIV, Fig. 18.) 

 Australia, Victoria. 



23. MouGEOTiA CRASSA (Wollc) dc Toni 1889. Sylloge Algarum, 



l,p.7i6. 



Vegetative cells about 50 /a x 200-500 /j.; conjugation scalariform; 

 zygospores in the greatly enlarged conjugating tube, globose, about 65/^ 

 in diameter; spore wall smooth. 



United States: Florida. 



24. MouGEOTiA cAELESTis Transeau 1934. Trans. Amer. Micros. 



Soc. 53, p. 218. 



Vegetative cells about 7-9 m x 50-75 /a; chromatophore with 2-6 

 pyrenoids, usually 4; conjugation scalariform; zygospores in the con- 

 jugating tube, rarely extending slightly into the gametangia, ovoid to 

 subglobose, 18-20^1 x 21-25/^; spore wall light yellow, punctate; repro- 

 duction usually by aplanospores; aplanospores globose to subglobose, 

 usually near the middle of the cell, either dividing it or wholly external, 

 rarely terminal, 16-18/x in diameter; spore wall as in zygospores. (PI. 

 XV, Fig. I.) 



United States: Oklahoma; Florida. 



Named for the collector Celeste Taft. 



25. MouGEOTiA NUMMULoiDEs (Hassall) dc Toni 1889. Sylloge 



Algarum. I, Ft. 2, p. 713. 



Vegetative cells 8-16 /x x 32-1 60 /a; chromatophores with 2-6 pyre- 

 noids in a row; conjugation scalariform; zygospores in the conjugating 

 tubes, globose to ovoid {i']-)22--p.{-T^'])ix in diameter; spore wall 

 brown, scrobiculate; aplanospores ovoid, within the angled sporogenous 

 cell. (PI. XV, Figs. 2-3.) 



United States: Iowa to Maine; North Carolina; Florida. 



British Isles to Finland and Bulgaria. 



Specimens collected from a fountain, Miami Beach, May 2, 1926, were 

 fruiting abundantly and had many filaments with several-celled branches. 



26. MouGEOTiA SINENSIS Li 1933. Ohio Jour. Set. 33, p. 152. 

 Vegetative cells 15-22 ju, x 100-132^1; chromatophore with 4-6 pyre- 

 noids in a single row; conjugating cells slightly geniculate; conjugation 

 scalariform; zygospores in the conjugating tube, ovoid to globose, 

 25-31 ju- X 25-31 /J.; spore wall yellow-brown, angularly reticulate. (PI. 

 XV, Fig. 4.) 



China, Tinghai. 



