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SPIROGYRA 189
150. Spirogyra reinhardii Chmielevski 1903. In Borge, Siisswas-
serflora Deutschland. 9, p. 31, Fig. 41.
Vegetative cells loS-iiy/x x 85-310/^, with plane end walls; 4 to 6
chromatophores, making .5 to 2 turns; conjugation scalariform; tubes
formed by both gametangia; fertile cells inflated on the conjugating
side; zygospores ovoid, 78-100 /x x 115-175^^,; median spore wall chestnut
brown, irregularly reticulate. (PI. XXXI, Figs. 3-5.)
Russia, Kharkov; Brazil.
151. Spirogyra hunanensis Jao 1940. Sineftsia. 11, p. 297, PL 4,
Figs. 4-5.
Vegetative cells 88-1 00 /x x 75-210 /x, with plane end walls, and 8-10
nearly straight or slightly spiraled chromatophores; conjugation scalar-
iform; tubes formed by both gametangia; receptive gametangia inflated
on the conjugating side up to 150/J.; zygospores ovoid, 88-105 m ^
i42-i63/(.; median spore wall yellow-brown, reticulate and verrucose,
with verrucae up to 13 m in length. (PI. XXXI, Fig. 6.)
China, Hunan.
SPECIES WITH SPORES LATERALLY COMPRESSED
152. Spirogyra discoidea Transeau 1934. Trans. Amer. Micros.
Soc. 53, p. 228.
Vegetative cells 39-42 /x x 72-11 /x, 5 with plane end walls; i chromatophore;
conjugation scalariform; tubes formed by both gametangia;
receptive gametangia enlarged or inflated toward the middle; zygo-
spores compressed-globose, 40-44^1 x 56-65 /x; median spore wall brown,
smooth. (PI. XXXI, Fig. 7.)
South Africa, Cape Town (E. Stephens Coll.).
153. Spirogyra sphaerospora Hirn 1895. Acta Soc. pro Fauna et
Flora Fennica. 11 (10), p. 10.
Vegetative cells /x 43-45 x 1 80-320 /x, with plane end walls; i chromatophore,
making about 3 turns; conjugation scalariform; tubes
formed by both gametangia; fertile cells greatly inflated (to 93-100 /x)
toward the middle; zygospores compressed-globose, 85-q5/x in diam-
eter; median spore wall yellowish-brown, smooth. (PI. XXXI, Fig. 9.)
Finland, Lojo.
Cedercreutz {Mem. Soc. pro Fauna et Flora Fennica, 11, p. 131) gives
evidence from examination of material from Lojo that Hirn's species is
identical with .S. pellucida (No. 156). This species is, therefore, listed here
tentatively on the basis of the single chromatophore. The published figures
of these 2 species are certainly very similar. Hirn may have been in error
concerning the number of chromatophores—a very unusual error for him.