MOUGEOTIA 109 



77. MouGEOTiA viRiDis (Kutzing) Wittrock 1872. Bih. Kgl. Svens\ 



Vetensk^. Akjid. Handl. 1, p. 39. 



Vegetative cells 6-<^ix x 40-1 60 yu.; chromatophores occupying most 

 of cell with 2-6 pyrenoids in a single row; conjugation scalariform; 

 sporangia dividing both gametangia; zygospores quadrate with concave 

 sides and refuse angles, 20-32 /a x 20-32 /la; spore wall smooth, colorless; 

 aplanospores oblique-ellipsoid, 14-16^1 x 30-36^. (PI. XIX, Figs. 3-4.) 



United States: Wisconsin; Illinois to New lersey and Florida. 



Europe, generally distributed; North Africa; India; China, Szechwan. 



78. MouGEOTiA PRODUCTA G. S. West 1907. Ann. Roy. Bot. Gard., 



Calcutta. 6, Part 2. 



Vegetative cells 7-8 /a x 84-160 jca; conjugation scalariform; sporan- 

 gia dividing both gametangia; zygospores quadrangular, with concave 

 or slightly convex sides, angles produced and truncate, 29-37 /a °^ ^ 

 side; spore wall "colorless," punctate; aplanospores obliquely ellipsoid 

 with ends produced, 14-18 ju, x 30-40 jti, otherwise similar to the zygo- 

 spores. (PL XIX, Figs. 5-6.) 



Burma and Assam. 



Near the ends of the aplanospores there is a ringlike thickening of the 

 outer spore wall. 



79. MouGEOTiA REGELLii Skuja 1937. Hcdwigia. 77, p. 53, PI, 2, 



Figs. 1-3. 



Vegetative cells 7-9 ]"■ x 50-1 60 /x; chromatophores sometimes con- 

 stricted in the middle, with 2-4 pyrenoids in a row; conjugation scalar- 

 iform; conjugating cells slightly geniculate; zygospores dividing both 

 gametangia, hexagonal-ovoid, 22-25 /j- x 29-30 m; spore wall thin, yellow- 

 brown, smooth; inner wall colorless to pale yellow, densely and finely 

 punctate. (PI. XIX, Figs. 7-8.) 



Greece, Taygetus. 



80. MouGEOTiA TUMiDULA Transcau 1914. Amer. four. Bot. 1, 



p. 297. 



Vegetative cells 6-8.5 /x ^ 70-120 /x; chromatophore with 4-8 pyre- 

 noids; conjugation scalariform; sporangia dividing both gametangia; 

 zygospores quadrangular, with convex walls, 22-26^1 x 26-30 /u., angles 

 retuse; spore wall colorless, distinctly punctate; aplanospores obliquely 

 ellipsoid, 12-14/^ x 28-32,1^, with retuse ends and coarsely punctate. 

 (PI. XIX, Figs. 9-10.) 



United States: Illinois; Wisconsin; Iowa; Arkansas, eastward to New 

 York. 



Puerto Rico. 



