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98<br />
ZYGNEMATACEAE<br />
36. MouGEOTiA GLOBULispoRA Jao 1935. Sifiefjsia. 6, p, 578.<br />
V'egetative cells 19-32 /x x 96-228^1; chromatophore with 10-12 pyrcnoids<br />
in a single row; conjugation scalariform; zygospores in the con-<br />
jugating tubes, globose to subglobose, ^2-38.4 /i x 32-35 m; spore wall<br />
yellow-brown at maturity, finely and closely scrobiculate. (PI. XV,<br />
Figs. 15-16.)<br />
China, Chungking, February, 1932, and January, 1933; Puerto Rico.<br />
37. MouGEOTiA PULCHELLA Wittrock 1871. Hcdwigia (1871), p. 88.<br />
Vegetative cells 24-29 /a x 48-1 50 ju.; chromatophores with 4-8 pyre-<br />
noids in a row; conjugation scalariform; zygospores in the conjugating<br />
tubes, ovoid to ellipsoid, with ends more or less flattened, 28-35/1 x<br />
40-50 m; spore wall yellow-brown, punctate. (PI. XVI, Fig. i.)<br />
United States: Minnesota; Michigan; Indiana.<br />
Sweden; Latvia; Finland; Germany; China, Kiangsi.<br />
38. MouGEOTiA LAEvis (Kutzing) Archer 1866. Quart. Jour.<br />
Micros. Soc. 6, p. 272, and 7, PI. 8, Figs. 1-3. Kiitzing.<br />
Species A Igarurn, p. 447. 1849.<br />
Vegetative cells 20-36^ x 20-100 /j,; chromatophores with 2 to 4<br />
pyrenoids in a row; conjugation scalariform; zygospores ellipsoid to<br />
ovoid, 20-36 /A X 35-50/4; wall scrobiculate; pits about 3/^ in diameter,<br />
2-3/1 apart. (PI. XV, Fig. 17.)<br />
United States: Wisconsin (G. M. Smith Coll.).<br />
England and Finland to Poland; Yugoslavia; North Africa.<br />
39. MouGEOTiA ROBUSTA (dc Bary) Wittrock 1885. Wittrock and<br />
Nordstedt Algae Exsiccatae, No. 651.<br />
Vegetative cells 25-33/1 x 75-260 /(.; chromatophores with 10-20<br />
scattered pyrenoids; conjugation scalariform; zygospores in conjugating<br />
tubes, ovoid to subglobose, 35-41<br />
/i x 47-58/'; spore wall brown, scrobic-<br />
ulate; pits 1-1.6/A in diameter, scattered. (PI. XVI, Figs. 2-4.)<br />
United States: Iowa; Michigan; Illinois; eastward to Massachusetts and<br />
New lersey.<br />
Africa.<br />
France; Germany; Sweden; Finland; Latvia; Ceylon; Japan; North<br />
Filaments with chromatophores having V-shaped ends or divided all<br />
the way to the nucleus are not uncommon in some collections. These chromatophores<br />
have sometimes been described as "double," or as 2 separate<br />
chromatophores.<br />
40. MouGEOTiA DAYTONAE Transcau 1934. Trans. Amer. Micros.<br />
Soc. 53, p. 219, Fig. 55.<br />
Vegetative cells 32-36/i x 100-250/1; chromatophores with numcr-
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