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Macrochytrium botrydiella in S.N. Dasgupta; Indian Phytopathol., 35: 215. 1982; ? Nom. nudum

Macrochytrium botrydioides var. minutum S.N. Dasgupta & R. John (no Latin diagnosis); Bull. Bot. Surv. India, 30: 1-82, fig. 67. 1988; Saprophytic; submerged pears as bait; tank; Lucknow U., India

MESOCHYTRIUM Gromov, B. V., Mamkaeva, K.A., and Pljusch, A.V. Nova Hedwigia 71: 303-317. 2000; in Chytridiales

Mesochytrium penetrans Gromov, B. V., Mamkaeva, K.A., and Pljusch, A.V. Nova Hedwigia 71: 303-317. 2000; Parasitic; Chlorococcum minutum; Karelia; Russia

MICROALLOMYCES Emerson & Robertson Amer. J. Bot., 61: 151-160. 2000; in Blastocladiales

Microallomyces dendroideus Emerson & Robertson; Amer. J. Bot., 61: 303-317, figs. 1-13. 1974; Saprophytic; house fly bait; damp soil from dried pond, Costa Rica

Micromyces furcata Rieth; Kulturpflanze, Beiheft 3: 286-295, Pl. 2 A-H. 1962; Parasitic; Spirogyra longata; Stechlinsee region; Germany

Micromyces grandis Miller 1955 Synchytrium grandis (Miller) Karling; "Synchytrium", Academic Press, NY. p. 124. 1964

MICROMYCOPSIDACEAE Subramanium; Curr. Sci., 43: 722-723. 1974. Family not included by D.J.S. Barr; HP, p. 463, 1990.

MILLEROMYCES Taylor, Hass & Remy Mycologia, 84: 901-910, 1992. Fossil genus compared to Endochytrium.

Milleromyces rhyniensis Taylor, Hass & Remy Mycologia, 84: 901-910, figs. 2-15. 1992; Associated with Palaeonitella cells; Lower Devonian fossil;   Rhynie, Aberdeenshire, Scotland.

Mitochytridium regale S.K.M. Hassan; Acta Mycol., 18: 155-160, figs.1-4, Pl. I. (1982) 1986; Saprophytic; snake skin bait; pond; Lazienki Royal Garden, Warsaw, Poland

Monoblepharella placed in Monoblepharidaceae by A. Batko; ZH, p. 249-250. 1975; Also placed in Monoblepharidaceae, perhaps accidentally, by D.J.S. Barr, HP, p.463

Monoblepharis micrandra Sparrow; Trans. Brit. Mycol. Soc., 48: 55-58, fig. 1 A-G. 1965; Saprophytic; twigs; shrubby swamp, Rifle River Recreation Area, MI, USA

Monoblepharis thalassinosus M. Elias; The Palaeobotanist; 14: 5-18, fig. 26. Saprophytic, marine; zoarium of Heteropora neozelanica (Bryozoan). Nomen dubium.

MONOPHAGUS in S.N. Dasgupta; Indian Phytopathol., 35: 215. 1982; ? nomen nudum

Monophagus blackmanii in S.N. Dasgupta; Indian Phytopathol., 35: 215. 1982; ? nomen nudum

Monophagus bruhlii in S.N. Dasgupta; Indian Phytopathol., 35: 215. 1982; ? nomen nudum

NEOCALLIMASTIGACEAE Heath (IF); Canad. J. Bot., 61: 295-307. 1983; in Neocallimastigales. Emended by Barr et al.; Canad. J. Bot., 67: 2815-2824. 1989

NEOCALLIMASTIGALES J. Li, Heath, & Packer (IF); Canad. J. Bot., 71: 393-407. 1993.  Review: Li & Heath; Canad. J. Microbiol. 39: 1003-1013. 1993. Review: Trinci et al.; Mycol. Res. 98: 129-152. 1994. Taxonomy: Y.W. Ho & D.J.S. Barr; Mycologia, 87: 656-678. 1995

NEOCALLIMASTIX Vavra & Joyon ex Heath Canad. J. Bot., 61: 295-307. 1983; in Neocallimastigales. Emended by Orpin & Munn; Trans. Brit. Mycol. Soc., 86: 178-181, figs. 1-4. 1986 Neocallimastix Vavra & Joyon (no Latin) ; Protistologica, 2: 5-15, Pl. 1-6. 1966

Neocallimastix frontalis (Braune) Vavra & Joyon ex Heath; Can. J. Bot., 61: 295-307. 1983; Lectotype: see Y.W. Ho & D.J.S. Barr; Mycologia 87: 656-678. 1995 Callimastix frontalis Braune 1913. Y.W. Ho & D.J.S. Barr place the following in synonymy; Mycologia, 87: 656-678. 1995: = N. variabilis Y.W. Ho & D.J.S. Barr 1993, = N. patriciarum Orpin & E.A. Munn 1986

Neocallimastix hurleyensis Theodorou & J. Webb Canad. J. Bot., 69: 1220-1224, figs. 1-7. 1991; Saprophytic; plant materials; rumen of sheep; U.K. ? = Neocallimastix frontalis (Braune) Heath; D.J.S. Barr: Mycotaxon, 54: 203-214. 1995

Neocallimastix joyonii Breton et al.; FEMS Microbiol. Lett., 58: 309-314, figs. 1-2. 1989; Saprophytic; straw; rumen of sheep; France Orpinomyces joyonii (Breton et al.) Li et al. 1991

Neocallimastix patriciarum Orpin & Munn Trans. Brit. Mycol. Soc., 86: 178-181, figs. 1-4. 1986; Saprophytic; plant tissues; rumen of sheep; = Neocallimastix frontalis (Braune) Heath; D.J.S. Barr: Mycotaxon, 54: 203-214. 1995

Neocallimastix variabilis Y.W. Ho & D.J.S. Barr; Mycotaxon, 46: 241-258, figs. 1-10. 1993; Saprophytic; guinea grass (Panicum maximum); rumen of Bos indicus; Peninsular Malaysia = Neocallimastix frontalis (Braune) Heath; D.J.S. Barr: Mycotaxon, 54: 203-214. 1995

Nephrochytrium bipes Hassan; Nova Hedwigia, 38: 727-740, figs. 18-28, Pl. 2. 1983; Saprophytic; onion skin; pond; near Warsaw, Poland

Nephrochytrium buttermerense Willoughby; Nova Hedwigia, 3: 439-444, Pls. 114-116. 1961; Saprophytic; cellophane bait; submerged mud; Buttermere, E.L.D., U.K. Diplophlyctis buttermerense (Willoughby) I.J. Dogma 1969. Not D. butermerense (Willoughby) I.J. Dogma; A. Batko; ZH, p. 220. 1975

Nephrochytrium complicatum Willoughby; Nova Hedwigia, 3: 439-444, Pls. 112, 113. 1961; Saprophytic; chitin bait; submerged lake mud; Ennerdale, E.L.D., U.K. Diplophlyctis complicata (Willoughby) I.J. Dogma 1974; combination also made by A. Batko; ZH, p.186. 1975

Nephrochytrium sexuale (Haskins) A. Batko; ZH, p. 220. 1975 Diplophlyctis sexualis Haskins 1950

Nowakowskiella crassa Karling 1949; = Nowakowskiella elegans (Nowakowski) Schroeter 1893 ; T.W. Johnson: Mycologia, 69: 34-45, 1977

Nowakowskiella delica Whiffen 1943 = Nowakowskiella elegans (Nowakowski) Schroeter 1893; T.W. Johnson: Mycologia, 69: 34-45, 1977

Nowakowskiella elegans (Nowak.) Schroeter 1893 = N. crassa Karling 1949, = N. delica Whiffen 1943, = N. endogena Constantineau 1901, and = N. profusa Karling 1944; T.W. Johnson: Mycologia, 69: 34-45. 1977

Nowakowskiella granulata Karling 1944 ? Cladochytrium granulatum (Karling) Sparrow 1960. Karling did not agree with Sparrow's 1960 placement in Cladochytrium;   Sydowia, Beiheft VI., p. 66. 1966

Nowakowskiella keratinophila S.K.M. Hassan & A. Batko Acta Mycol., 22: 193-196, figs. 1-7, 1986 (1988); Saprophytic; snake skin bait; brackish water; Bay Zalew Wislany, Poland

Nowakowskiella methistemichroma A. Batko & S.K.M. Hassan; + key to Nowakowskiella spp. Sydowia, 35: 27-36, figs. 1-21, 1982; Saprophytic; onion skin bait; water and mud; Kampinos National Park, Poland

Nowakowskiella moubasherana (IF 5:397) S.K.M. Hassan  Acta Mycol., 19: 77-82, figs. 1-18 & Pl. I. 1983; Saprophytic; onion skin bait; Sphagnum bog water; near Warsaw, Poland

Nowakowskiella multispora Karling; Sydowia, 17: 314-319, figs.1-8. 1964;   Saprophytic; corn leaves and cellophane; soil; dry catch basin, Rhamnad Dist., India

Nowakowskiella multispora Karling var. longa Kiran & Dayal; Acta Botanica Indica, 20: 303-304, figs. 1-8. 1993. Saprophytic; pond water; leaf litter, insect wings and cellophane; Ramkatora (Varanasi), U.P. India.  Lacks Latin description and designation of type.

Nowakowskiella pitcairnensis Karling; Nova Hedwigia, 15: 191-201, figs. 1-19. 1968; Saprophytic; hemp seed bait; soil; Pitcairn, Oceania

Nowakowskiella profusa Karling 1944 = Nowakowskiella elegans (Nowakowski) Schroeter 1893; T.W. Johnson: Mycologia, 69: 34-45

Nowakowskiella profusa forma constricta Kobayasi & Konno; Bull. Natl. Sci. Mus., 14: 373-386, fig. 3, A-B. 1971; Saprophytic; Cellophane; soil; Papua, Territory of New Guinea and Solomon Islands

Nowakowskiella sculptura Karling; Trans. Brit. Mycol. Soc., 44: 453-457, figs. 1-24. 1961; Saprophytic; cellophane bait; soil; Baton Rouge, LA, USA

Obelidium megarhizum Willoughby; Trans. Brit. Mycol. Soc., 44: 586-592, fig. 1, Pl. 37. 1961; Saprophytic; termite wings; submerged mud; Malham Tarn, U.K.

OEDOGONIOMYCETACEAE D.J.S. Barr; HP, p. 463, 1990; in Monoblepharidales

Oedogoniomyces from Harpochytriales to Monoblepharidales; D.J.S. Barr: HP, p. 463, 1990

Olpidium (Braun) Rabenhorst 1868 = Pleotrachelus Zopf 1884; Karling: CI, p. 14. 1977. D.J.S. Barr placed Olpidium in Spizellomycetales; Canad. J. Bot., 58: 2380-2394. 1980

Olpidium appendiculatum Karling; Sydowia, 19: 213-226, Pl. 46, figs. 1-13. 1965; Saprophytic; pollen; sand & moss; near glacier, Antarctica

Olpidium bornovanus (Sahtiyanci) Karling; CI, p. 13. 1977 Pleotrachelus bornovanus Sahtiyanci 1962 = O. radicale; Lange & Insunza; Trans. Brit. Mycol. Soc. 69: 377-384. 1977; = O. cucurbitacearum Barr & Dias; Campbell & Sim; Canad. J. Bot., 72: 1136-1143. 1994

Olpidium brassicae (Woronin) Dangeard Pleotrachelus brassicae (Woronin) Sahtiyanci; Arch. Mikrobiol., 41: 187-228. 1962

Olpidium cucurbitacearum D.J.S. Barr and Dias; Canad. J. Bot., 46: 1087-1091, figs. 1-12 & 13-22. 1968; Parasitic; cucumber roots; soil; southern Ontario, Canada = Olpidium radicale 1977 as redescribed, Lange & Insunza; Trans. Brit. Mycol. Soc., 69: 377-384. 1977

Olpidium entophlyctoides in S.N. Dasgupta; Indian Phytopathol., 35: 215. 1982; ? nomen nudum

Olpidium fulgens (Zopf) Karling; CI, p. 18. 1977 Pleotrachelus fulgens Zopf 1892

Olpidium incognitum S.N. Dasgupta & R. John; Bull. Bot. Surv. India, 30: 1-82, figs. 5-6. 1988; Parasitic; egg of rotifer; tank sediment; Lucknow U., India

Olpidium indicum Karling (homonym); Sydowia, 17: 302-307, figs. 1-21. 1964; Parasitic; Catenophlyctis variabilis & Rhizophlyctis fuscus; soil; Rhamnad Dist., India; Olpidium indum Karling 1966

Olpidium indicum Kiran & Dyal (homonym & type not indicated); Proc. Natl. Acad. Sci, India, Sect. B. 62: 295-298, fig. 2. 1992; Parasitic; root hairs of angiosperms; Pond; Ramkatora (Varanasi, U.P., India

Olpidium indum Karling; Sydowia, Beiheft VI, p.6. 1966 Olpidium indicum Karling 1964

Olpidium longum S.N. Dasgupta & R. John; Bull. Bot. Surv. India, 30: 1-82, figs. 2-4. 1988; Parasitic; eggs of animicules; tank sediment; Lucknow U., India

Olpidium nematodae Skvortzow; (Tribe refutes Sparrow 1960 interpretation) Tribe; Trans. Brit. Mycol. Soc., 69: 509-511, 1977

Olpidium paradoxum S.L. Glocking; Mycol. Res. 102: 206-208. 1998; parasitic and saprobic; loricate rotifers; pond water; Ibaraki, Japan; unlikely to be an Olpidium (see fig.8).

Olpidium poreferum Kiran and Dyal (invalid; type not designated) Proc. Natl. Acad. Sci., India, Sect. B, 62: 295-298, Pl. 1, fig. 1. 1992; Parasitic; rotifers; Pond, Ag. Farm; B.H.U., U.P., India

Olpidium pseudoeuglenae S.N. Dasgupta & R. John; Bull. Bot. Surv. India, 30: 1-82, fig. 7. 1988; Parasitic; chytrid on Closterium; tank sediment; Lucknow U., India

Olpidium radicale Schwartz & Cook; redescribed by Lange & Insunza; Trans. Brit. Mycol. Soc., 69: 377-384. 1977; = O. cucurbitacearum D.J.S. Barr and Diaz 1968; = Pleotrachelus bornovanus Sahtiyanci 1962. Olpidium radicale not accepted by Campbell & Sim; Canad. J. Bot. 72: 1136-1143. 1994; Campbell & Sim consider O. radicale a nomen dubium and accept O. bornovanus.

Olpidium rostriferum var. indica Kiran & Dayal (invalid; type not designated) Proc. Natl. Acad. Sci., India, Sect. B, 62: 295-298, fig. 3. 1992; Saprophytic; leaf of angiosperm; pond; Ramkatora, U.P., India

Olpidium sparrowii I.J. Dogma; Philipp. J. Biol., 6: 9-20, figs. 1-16. 1977; table of Olpidium spp. parasitic on rotifers; Parasitic; rotifer eggs; cultivated soils; Putiao, Luzon, Philippines

Olpidium synchytrii Karling; Mycologia, 50: 944-947, figs. 1-7. 1958; Parasitic; Synchytrium namae on Nama jamaicensis plants; Texas, USA

Olpidium vermicola G.L. Barron & E. Szijarto; Mycologia, 78: 972-975, figs. 1-12. 1986; Parasitic; nematode eggs; old stump; Lake Manitowabing, Ontario, Canada

Olpidium virulentus (Sahtiyanci) Karling; CI, p. 13, 1977 Pleotrachelus virulentus Sahtiyanci 1962

Olpidium wildemani (Petersen) Karling; CI, p. 18, 1977 Pleotrachelus wildemani Petersen 1910

Olpidium zopfianus (Morini) Karling; CI, p. 18, 1977 Pleotrachelus zopfianus Morini 1913

ORPINOMYCES D.J.S. Barr & H. Kudo; Canad. J. Bot., 67: 2815-2824. 1989; in Neocallimastigales. Emended by Y.W. Ho & D.J.S. Barr; Mycologia, 87: 656-678. 1995

Orpinomyces bovis D.J.S. Barr & H. Kudo; Canad. J. Bot., 67: 2815-2824. figs. 37-51. 1989; Saprophytic; plant material; digestive tract of herbivores; Lethbridge, Alberta, Canada; = Orpinomyces joyonii (Breton et al.) Li et al. 1991

Orpinomyces intercalaris Y.W. Ho; Mycotaxon, 50: 139-150, figs. 1-10. 1994; Saprophytic; guinea grass (Panicum maximum); rumen of cattle (Bos indicus); Malaysia

Orpinomyces joyonii (Breton et al.) Li et al.; Canad. J. Bot., 69: 580-589. 1991; = O. bovis Barr & H. Kudo 1989; ? Neocallimastix joyonii Breton et al. 1989; Lectotype: see Y.W. Ho & D.J.S. Barr; Mycologia, 87: 656-678. 1995

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