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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; chromatophores
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 chromatophores,
making i to 3 turns; conjugation scalariform; tubes formed
by both gametangia; fertile cells cylindric, shortened; zygospores elUp-
soid, ju. 54-60 X 80-90^1; median spore wall minutely verrucose, yellowbrown.
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, ju. 48-64 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,