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MOUGEOTIA 103
56. MouGEOTiA ATUBULOSA Kricgcr 1941. Rabenhorst's KryptogamenfJora.
13 (2), p. 168.
Vegetative cells 19-21 /a x 100-140/^; chromatophores with several
pyrenoids in a row; conjugation scalariform; zygospores compressed-
ovoid, 25-27^1/, X 20-21 ju., with the longer axis parallel with the filaments,
wholly within the conjugating tubes; at maturity the tube wall becomes
a pectic wall 8-10 ^t in thickness; spore wall blue, coarsely punctate;
pits about .5 /A in diameter, 1-1.5A1 apart. (PI. XVII, Figs. 13-14.)
Java, Dieng Plateau (B. Rensch Coll.).
57. MouGEOTiA OPERCULATA Transeau 1934. Trans. Amer. Micros.
Soc. 53, p. 220, Fig. 52.
Vegetative cells 18-21 /a x 60-285/^; chromatophores with 4-8 pyre-
noids, usually 4; conjugation scalariform; zygospores in the conjugating
tubes, compressed-spheroid, 27-30/^ x 21-27 jU., with a prominent equa-
torial ridge and suture on the wall; spore wall pale yellow, shallow-
scrobiculate. (PI. XVII, Figs. 11-12.)
United States: Oklahoma; Mississippi; Florida.
58. MouGEOTiA PAWHUSKAE Taft 1934. TruHS. Amer. Micros. Soc.
53, p. 220.
Vegetative cells i8-22iu x 90-170/1,; chloroplasts with 6-8 pyrenoids
in a row; conjugation scalariform; zygospores in the conjugating tubes,
compressed-globose, 34-40 /a x 25-32^1, with the longer axis at right
angles to the tubes, surrounded by a pectic layer 4-16/1 in thickness;
spore wall yellow to yellow-brown, scrobiculate, with a distinct equa-
torial suture. (PI. XVII, Figs. 24-25.)
United States: Oklahoma, Pawhuska, April 25, 1932.
59. MouGEOTiA SEMINOLEANA Tiffany 1934. Trans. Amer. Micros.
Soc. 53, p. 220, Fig. 40.
Vegetative cells 20-25 /t x 70-200 /t; chromatophores with 4-12 pyre-
noids in a row; conjugation scalariform; zygospores in the conjugating
tubes, compressed-globose, 32-47 /x x 25-36/1; outer sporangium wall a
pectic layer 2-4 /a in thickness, absent from most of the mature spores;
spore wall brown to dark chestnut brown, coarsely punctate, suture
sometimes prominent, sometimes scarcely visible; aplanospores smaller,
20-22/1 X 25-29/1, usually outside the mother cell, otherwise similar to
the zygospores. (PI. XVII, Fig. 22.)
United States: Florida, Fort Myers; Texas, Fredericksburg (Taft Coll.).
The last of the series with compressed-globose spores, which begins
with M. depressa Number 49.