174 ZYGNEMATACEAE 



89. Spirocyra splendida G. S. West 1914. Mem. Soc. Neucha- 



teloise Sci. Nat. 5, pp. 10 13-51. 



Vegetative cells 158-166/1 x 210-330 m, with plane end walls; 5 to 6 

 chromatophores, making i.t, ro 2 turns in the cells; conjugation 

 scalariform; tubes formed by both gametangia; fertile cells cylindric; 

 zygospores ellipsoid, about 1^5^^ x 216/u.; median spore wall yellow, 

 smooth. (PI. XXVII, Fig. 17.) 



South America, Colombia, Cundinamarca. 



90. Spirogyra emilianensis Bonhomme 1858. Sur quelques algues 



d'eau douce, p. 7, PI. 2, Fig. 2. 



Vegetative cells 50-60 /x x 100-200 /m, with plane end walls; 4 to 5 

 chromatophores, making .2 to 2.5 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells cylindric; zygospores ovoid, 

 52-60/U. X 90-124/i; median spore wall brown, smooth. (PI. XXVII, 

 Fig. 12.) 



United States: Massachusetts, Boston (Bullard Coll.). 



France. 



91. Spirogyra exilis W. & G. S. West 1907. Ann. Roy. Bot. Gard., 



Calcutta. 6, p. 186. 



Vegetative cells 27-30^1 x 42-120 /x, with plane end walls; 2 broad 

 chromatophores, making 1.5 to 2 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells enlarged on the inner face, or 

 cylindrical; sterile cells often greatly inflated to 49 m; zygospores ovoid 

 to oblong, 27-30 ju. X 36-45^1; median spore wall yellow, smooth. (PI. 

 XXVII, Fig. 13.) 



Burma. 



92. Spirogyra distenta Transeau 1934. Ohio Jour. Sci. 34, p. 420. 



Fritsch. Trans. Roy. Soc. S. Africa. 9, p. 46, as S. decimina 

 var. infiata. 

 Vegetative cells 48-52 /x x 8i-i8o/i, with plane end walls; 2 chro- 

 matophores, making 1.5 to 2 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells cylindric or enlarged; sterile 

 cells inflated to 75/x; zygospores ovoid, 49-55/^ x 50-1 00 /t; median spore 

 wall yellow, smooth. 



United States: Illinois; Kentucky; Ohio. 

 South Africa. 



93. Spirogyra triplicata (Collins) Transeau 1944. Ohio Jour. 



Sci. 44, p. 243. Collins, F. S. S. decimina var. triplicata. 

 Phycoth. Bor.-Amer., No. 960. Green Algae of North 

 America, p. no. 1912. 



