Download PDF

MOUGEOTIA 89
74. Spore wall smooth 75
74. Spore wall punctate 76
75. Diameter vegetative cells 8-12 /a, spores
gray-brown 95. M. rava
75. Diameter vegetative cells 8-14 p., spores
colorless 5. M. calcarea
75. Diameter vegetative cells 5-9 /a, spores
yellow 92. M. ventricosa
76. Vegetative cells 8-12 jtt in diameter 77
76. Vegetative cells 13-15 /x in diameter 94. M.mayori
77. Sporangia asymmetric-ellipsoid 93. M.prona
77. Sporangia globose 24. M. caelestis
78. Diameter vegetative cells 14-19JU... 51. M.pectosa
78. Diameter vegetative cells 19-24/"-. . 14. M.sphaerocarpa
Aplanospores have been observed in scattered cells, or entire filaments
of the following species that regularly reproduce by zygospores
M. ajricana, M. americana, M. areolata, M. caelestis, M. calcarea, M.
capucina, M. cyanea, M. elegantula, M. floridana, M. gracillima, M.
laetevirens, M. nummuloides, M. parvula, M. pectosa, M. poinciana,
M. producta, M. quadrangulata, M. recurva, M. seminoleana, M.
sphaerocarpa, M. thylespora, M. transeaui, M. tumidula, M. ubero-
sperma, M. viridis.
Descriptions of Species
1. MouGEOTiA ANGusTA (Hassall) Kirchner 1878. Kryptogamen-
fiora Schlesien, p. 128.
Vegetative cells 5-6;". x 30-95 /a; chromatophores with 4 pyrenoids
in a row; conjugation scalariform; zygospores formed wholly in the
conjugating tube, globose, about 7-8 /a in diameter; spore wall brown,
smooth. (PL XIII, Fig. i.)
United States: South Carolina.
British Isles; Germany; Austria; Belgium; Bulgaria; Czechoslovakia;
North Africa; Netherland Indies.
2. MouGEOTiA TENUissiMA (dc Bary) Czurda 1932. Siisswasser-
flora Mitteleuropa. 9, p. 66.
Vegetative cells 5-6 ju. in diameter; conjugation scalariform; zygo-
spores formed wholly in the conjugating tube, ovoid, 11-15M x 12-14 ja;
spore wall brown, thick, smooth. (PI. XIII, Fig. 2.)
Germany; France.
3. MouGEOTiA PARVULA Hassall 1843. Ann. and Mag. Nat. Hist.
11, p. 434.