io6 ZYGNEMATACEAE 



22-26 /i.; spore wall yellow-brown, smooth, thickened, forming rounded 

 processes at the angles. (PI. XVIII, Figs. 4-5.) 



From France to Czechoslovakia, and North Africa. 



The figure published by Hansgirg is incorrect in that chromatophorcs 

 were drawn in the unoccupied halves of the gametangia. 



67. MouGEOTiA THYLESPORA Skuja 1929. Actu Horti Bot. Univ. 



Latviensis. 4, p. 48. 



Vegetative cells 5-8 yu, x 25-80 /x; chromatophore with 4-8 pyrenoids 

 in a single row; conjugating cells geniculate; conjugation scalariform; 

 sporangia dividing both gametangia; zygospores cjuadrangular with 

 angles produced and truncate, 16-22/i. x 20-32 /x; spore wall yellow- 

 brown, scrobiculate, with tumid sides and rounded projecting corners; 

 aplanospores oblique-ellipsoid, i8-25At x 28.8-39.6/i. (PI. XVIII, Figs. 

 6-8.) 



United States: Florida (Tiffany Coll.). 



Estonia. 



68. MoucEOTiA UBERospERMA W. & G. S. West 1897. ]our. Bot. 35, 



P-37- 



Vegetative cells 6-8 /i x 24-64 /x; conjugation scalariform; zygo- 

 sporangium dividing both gametangia; zygospores angular-globose 

 (4-6 angles), wall very thick and lamellate, smooth and colorless, with 

 corners extended into 4 solid, unequal processes which project into the 

 gametangia; zygospores 21-27 /u. in diameter, processes 3-1 8 /x long; 

 aplanospores 20 /-i x 30/x with 2 processes. (PI. XVIII, Figs. 9-10.) 



Africa, Angola and Kentani. 



69. MoUGEOTIA CRATEROPHORA Bohlifl I9OI. Blh. Kgl. SvCtlsJ^ 



Vetensk,. A /{ad. Handl. 27, p. 50. 



Vegetative cells 7-9M in diameter (8-14 diameters long); conjuga- 

 tion scalariform; zygospores in the conjugating tubes, or dividing one, 

 or both, gametangia; zygospores globose to ovoid, i8-22/i x 24-28 /t, 

 with 2 to 4 crateriform or retuse processes; spore wall brown, smooth. 

 (PI. XVIII, Figs. 11-14.) 



Azores. 



70. MoUGEOTIA IRREGULARIS W. & G. S. WcSt 1897. JoHV. Bot. 



35, p. 38. 



Vegetative cells 1 3.5-1 5 A^ x 70-90)11; conjugation scalariform; con- 

 jugating cells more or less recurved; sporangium dividing both gam- 

 etangia; zygospores irregularly quadrate to trapezoid with concave 

 sides and thick walls, 38-63^^ x 42-48/11 including the processes, angles 



