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MOUGEOTIA 113
94. MouGEOTiA MAYORi (G. S. West) Transcau 1926. Ohio four.
Sci. 26, p. 327. G. S. West. Mem. Soc. Neuchateloise Sci.
Nat. 5, p. 1027.
Vegetative cells 13-15^^ x 235-315 jm; chromatophore with 11-14
pyrenoids in an irregular row; zygospores unknown; aplanospores
obliquely ellipsoid with truncate ends, 24-26 /a x 34-38 /a; spore wall
yellow, punctate. (PI. XIX, Fig. 29.)
South America, Colombia.
95. MouGEOTiA RAVA Transcau 1944. Ohio Jour. Sci. 44, p. 244.
Vegetative cells 8-12 /a x 32-120 a^; chromatophore with 4-8 pyre-
noids in a row; reproducing by aplanospores which are formed mostly
outside the recurved sporiferous cells; aplanospores globose, 16-20 /a in
diameter; wall gray-brown and smooth. (PI. XIX, Fig, 25.)
United States: Mississippi, Starkville; Louisiana, Alexandria (Hicks
Coll.); Texas, Austin (Taft Coll.).
The species resembles certain aplanosporic filaments of M. calcarea.
The metallic gray-brown color of the spores is distinctive, also the absence of
conjugation.
SPECIES NOT IN PROPER SEQUENCE
96. MouGEOTiA suBPALUDosA Ley 1944. Sinensia. 15, p. 97.
Vegetative cells 9-1 ia'- x 30-1 52 /a; pyrenoids 2; conjugation scalar-
iform; sporangia dividing both gametangia; zygospores quadrangular-
ovoid, sometimes much rounded, 25-29 /a x 2 1-29 /a, 20-27 /a thick; spore
wall very thick, smooth, deep yellow at maturity. (PI. XIX, Fig. 32.)
China, Woo-Yang-She, northern Kwangtung, February 21, 1942.
Resembles Number 86, Mougeotia paludosa West, but differs in smaller
dimensions throughout.
97. Mougeotia chlamydata Prescott 1947. Ohio four. Sci. 47,
p. 130.
Vegetative cells 12-16/A x 200-240 /a; chromatophores with 4-6 pyre-
noids in a row; conjugation scalariform; zygospores compressed-globose,
26-28 /A X (30-) 32-38 /a; sporangium wall bluish (by refraction), spore
wall thick, metallic green, and smooth. The sporangium wall is quite
unique in that after conjugation it has an inner and outer layer of cel-
lulose separated by a thick pectic layer. The outer layer disintegrates
equatorially as the spore reaches maturity and the pectic layer dissolves
leaving a collar around the base of each half of the conjugating tube.
(PI. XIII, Fig. 19.)
Ecuador, volcano Cotopaxi, hanging bog at 14,000 feet.
Should be near M. cyanea, Number 55. The spore is compressed at
right angles to the conjugating tube.