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. 



