1 82 ZYGNEMATACEAE 



122. Spirogyra shantungensis Li 1936. Bull. Fan Mem. Inst. 



Biol., Botany. 7, p. 60. 



Vegetative cells 46-52/1 x 1S4-320/1, with plane end walls; chro- 

 matophores 3, making 2 to 4 turns in the cell; conjugation scalariform; 

 tubes formed by both gamctangia; fertile cells inflated up to 70/1 and 

 shortened; zygospores ellipsoid, with somewhat rounded ends, 4(S-56m x 

 96-140 /bi; median spore wall double, outer nearly colorless, wrinkled; 

 inner, brown, finely and irregularly reticulate. (Pi. XXIX, Fig. 7.) 



China, Tsingtao, Shantung, October, 1934. 



123. Spircx^yra braziliensis (Nordstedt) Transeau 1915. Ohio 



Jour. Sci. 16, p. 26. Wittrock and Nordstedt Algae Ex- 

 siccatae, No. 360, as S. lineata var. braziliensis. 



Vegetative cells 50-60 /a x 125-300 jla, with plane end walls; 3 chro- 

 matophores, making i to 3 turns; conjugation scalariform; tubes formed 

 by both gametangia; fertile cells cylindric, shortened; zygospores elUp- 

 soid, 54-60 ju. X 80-90^1; median spore wall minutely verrucose, yellow- 

 brown. 



United States: Texas; Iowa; Mississippi. 



South America; China, Shantung. 



124. Spirogyra pulchrifigurata Jao 1935. Sinensia. 6, p. 601, 



PI. 8, Figs. 91-92. Amer. Jour. Bot. 23, p. 57, Figs. 15-17. 

 1936. 



Vegetative cells 42-58 /^ x 64-192/^, with plane end walls; 3 to 4 

 chromatophores, making 1.5 to 4 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells inflated up to 83/x; zygospores 

 ellipsoid, with more or less rounded ends, 48-64 ju. x 70-109 ^u; median 

 spore wall yellow-brown, irregularly reticulate. (PI. XXIX, Figs. 8-9.) 



United States: Louisiana (Taft Coll.). 



China, Szcchvvan, February, 1930. 



125. Spirogyra torta Blum 1943. Amer. Jour. Bot. 30, p. 783, 



Figs. 3-5- 



Vegetative cells 49-56/1 x 270-600/1, with plane end walls; 3 to 5 

 chromatophores, making i to 4 turns in the cell; conjugation scalar- 

 iform; tubes formed by both gametangia; fertile cells cyUndric or 

 enlarged; zygospores ellipsoid, 67-72/1 x 11 0-1 35/1; outer spore wall 

 wrinkled, loose; median spore wall dark yellow, conspicuously pitted- 

 reticulate. (PI. XXIX, Fig. 10.) 



United States: Massachusetts, Trout Pond, Megansett, July 27, 1942. 



126. Spirogyra quadrilaminata Jao 1935. Sinensia. 6, p. 600, 



