Chytrid Taxonomy since 1960 P-Q

A-B C D-E G-L M-O R S-Z

PALUDOMYCES Letcher & M.J. Powell, gen. nov. [Chytridiomycota, Halomycetaceae] MycoBank no.: 811465. Letcher et al. Mycologia 107: 808–830. 2015

Paludomyces mangrovei (Ulken) Letcher & M.J. Powell, comb. nov. MycoBank no.: 811466130.
Ξ Phlyctochytrium mangrovei Ulken, Veroff. Inst. Meeresforsch. Bremerhaven 13:227. 1972.
Letcher et al. Mycologia 107: 808–830. 2015

PARAMICROSPORIDIUM Corsaro et al. [Cryptomycota (Rozellomycota)] MycoBank no.: 807391. Parasitol Res 113: 1909–1918. 2014
Paramicrosporidium saccamoebae Corsaro et al. MycoBank no.: 807392. Parasitol Res 113: 1909–1918. 2014
parasitic, Saccamoeba sp., freshwater pond, GERMANY
Paramicrosporidium vannellae Corsaro et al. MycoBank no.: 807393. Parasitol Res 113: 1909–1918. 2014
parasitic, Vannella sp., keratitis patient, GERMANY

PARANOMYCES Letcher & M.J. Powell [Rhizophydiales, Halomycetaceae]  MycoBank no.: 811469 Mycologia, 107: 808–830. 2015

Paranamyces uniporus Letcher & M.J. Powell,  MycoBank no.: 811470. Mycologia, 107: 808–830. 2015. Saprobic; pollen, estuarine mud flat, Delta del Parana´, BUENOS AIRES PROV, ARGENTINA
HOLOTYPE = FIG. 4E in Letcher et al. Mycologia 107: 808–830. 2015.

Paraphelidium tribonemae Karpov, Moreira & Lopez-Garcia [Phylum Aphelida Karpov, Aleoshin & Mikhailov 2014; Class Aphelidea Gromov 2000; Order Aphelidida Gromov 2000, Family Aphelididae Gromov 2000] Journal of Eukaryotic Microbiology (in press) 2016. parasitic, Tribonema gayanum, roadside ditches, Novgorod district, RUSSIA

PATERAMYCETACEAE MycoBank no.: MB 511776. [Rhizophydiales] Mycological Research 112: 759–782. 2008

PATERAMYCES Letcher [Rhizophydiale, Pateramycetaceae] Mycological Research 112: 759–782. 2008

Pateramyces corrientinensis Letcher Mycological Research 112: 759–782. 2008
saprobic, pollen bait, small lake, Museo Argentino de Ciencias Naturales, ARGENTINA

PECORAMYCES Radwa Hanafy, Noha Youssef, G.W. Griff. & Mostafa Elshahed., [Neocallimastigales].; Index Fungorum registration: IF552530; Mycologia 109: 231–243. 2017

Pecoramyces ruminatium RadwaHanafy, Noha Youssef, G.W. Griff. &Mostafa Elshahed; Index Fungorum registration: IF552531. Mycologia 109: 231–243. 2017. Feces of an Angus steer; Stillwater, OKLAHOMA, USA

PENDULICHYTRIUM K. Seto & Y. Degawa MycoBank # MB821132 [Chytridiales, Chytriomycetaceae] Mycoscience https://doi.org/10.1016/j.myc.2017.08.004.  2017

Pendulichytrium sphaericum K. Seto & Y. Degawa MycoBank # MB821171. Mycoscience https://doi.org/10.1016/j.myc.2017.08.004.  2017

PEREXIFLASCA Krings, C.J. Harper & E.L. Taylor MycoBank # MB819876. Geobios 56: 107–114. 2019. Fossil, possible Chytridiomycota

Perexiflasca tayloriana M. Krings, C.J. Harper & E.L. Taylor, 2017, emend. MycoBank # : MB819877, Geobios 56: 107–114. 2019. Fossil.

Perexiflasca ventricosa M. Krings et C.J. Harper MycoBank # : MB830621. Geobios 56: 107–114. 2019. Fossil.

Phlyctidium (Braun) Rabenhorst 1868 = Rhizophydium Schenk 1858; Karling: CI, Pp. 64–65. 1977

Phlyctidium anatropum (Braun) Rabenhorst 1856 Ξ Rhizophydium anatropum (Braun) Karling; CI, p. 65. 1977

Phlyctidium apophysatum Canter 1947 emended by H. Canter; Trans. Brit. Mycol. Soc. 44: 522–528, figs. 1–3 & Pl. 34, figs.1-10. 1961;
Parasitic; Mougeotia; E.L.D., U.K. Ξ Canteria apophysata (Canter) Karling 1971

Phlyctidium brevipes var. marinum Kobayasi & Ookubo 1954
Ξ Rhizophydium brevipes var. marinum (Kobayasi & Ookubo) Karling; CI, p. 65, 1977

Phlyctidium bumilleriae Couch 1932 Ξ Rhizophydium bumilleriae (Couch) Karling; CI, p. 65. 1977

Phlyctidium globosum Skuja 1956 Ξ Rhizophydium skujai (Skuja) Karling; CI, p. 64. 1977

Phlyctidium keratinophilum Ookubo and Kobayasi 1955
Ξ Rhizophydium ellipsoidium (Ookubo & Kobayasi) Karling; CI, p. 64. 1977

Phlyctidium keratinophilum var. savulescui Cejp; Omagiu lui Traian Savulescu (Bucuresti), 129–138, fig. 1. 1959;
Saprobic; human hair; rill; pasture near Rokycany, ROMANIA

Phlyctidium marinum Karling; Sydowia 20: 74–84, Pl. XII, figs. 1–8. 1967;
Saprobic; Pinus pollen; beach sand + sea water; Aukland, NEW ZEALAND
Ξ Rhizophydium novae-zelandiensis (Karling) Karling; CI, p. 65. 1977

Phlyctidium mycetophagum Karling 1946 Ξ Rhizophydium obypriformis (Karling) Karling; CI, p. 64. 1977

Phlyctidium olla Sparrow 1933 Ξ Rhizophydium olla (Sparrow) Karling; CI, p. 65. 1977

Phlyctidium scenedesmi Fott; Z. Allg. Mikrobiol. 7: 97–102, figs. 1–16. 1967;
Parasitic; Scenedesmus quadricauda in mass culture; water; Trebon, CZECHOSLOVAKIA;
Ξ Rhizophydium scenedesmi (Fott) Karling; CI, p. 65. 1977

Phlyctidium spinulosum Sparrow 1933 Ξ Rhizophydium spinulosum (Sparrow) Karling; CI, p. 65. 1977

Phlyctidium tenue Sparrow 1952 Ξ Rhizophydium tenue (Sparrow) Karling; CI, p. 65. 1977

Phlyctidium tubulatum in S.N. Dasgupta; Indian Phytopathol. 35: 215. 1982; ? nomen nudum

Phlyctochytrium acuminatum D.J.S. Barr; Canad. J. Bot. 47: 991–997, figs. 71–82. 1969;
Saprobic; pine pollen; soil; southwestern Ontario, Canada; Ξ Spizellomyces acuminatus (D.J.S. Barr) D.J.S. Barr 1984

Phlyctochytrium aestuarii Ulken; Veröff. Inst. Meeresforsch. Bremerhaven 13: 205–216, figs. 5 & 6. 1972;
Saprobic; pine pollen; river mud, Weser Estuary; GERMANY

Phlyctochytrium africanum Gaertner 1954 (not validly published)
= Spizellomyces acuminatus (D.J.S. Barr) D.J.S. Barr; Canad. J. Bot. 62: 1171–1201. 1984

Phlyctochytrium apophysatum S.N. Dasgupta & R. John; Bull. Bot. Surv. India 30: 1–82, fig. 36. 1988;
Saprobic ?; Closterium; tank, garden; Lucknow U., INDIA

Phlyctochytrium arcticum D.J.S. Barr; Canad. J. Bot., 48: 2279-2283, figs.1-17. 1970;
Saprobic; pollen; soil, pH 7.9; Canadian Arctic; Ξ Triparticalcar arcticum D.J.S. Barr 1984

Phlyctochytrium aureliae 1945 Ajello = Phlyctochytrium variable 1954; T.W. Johnson; Norw. J. Bot. 22: 249–257. 1975

Phlyctochytrium californicum D.J.S. Barr; Canad. J. Bot. 47: 991–997, figs. 23–33. 1969;
Saprobic; pine pollen; soil; CALIFORNIA, USA. = Gaertneriomyces semiglobiferum (Uebelmesser) Barr 1980. Ξ Gaertneriomyces californicus (D.J.S. Barr) M.J. Powell & Letcher; Nova Hedwigia 2017 (in press)

Phlyctochytrium chandleri (IF 4:385) Sparrow; Arch. Microbiol. 104: 39–49, figs. 6–9. 1975;
Saprobic; pollen; soil; oasis, TUNISIA

Phlyctochytrium circulidentatum Koch Mycologia 61: 1021–1030, figs. 1–3, 11–17. 1969;
Saprobic; pollen and moribund Closterium; bottom debris; Ravenal Lake, NORTH CAROLINA, USA

Phlyctochytrium cystoferum Willoughby; Arch. Mikrobiol. 52: 101–131, fig. 1 a–h. 1965;
Saprobic; grass leaf bait; soil from heath; Victoria, AUSTRALIA;
Ξ Polyphlyctis cystofera (Willoughby) A. Batko; ZH, p. 183. 1975

Phlyctochytrium dichotomum Umphlett; Mycologia, 59: 1085-1096, figs. 1-41. 1967;
Saprobic; sweet gum pollen; soil + sawdust; Chatham Co., NORTH CAROLINA, USA
Ξ Kochiomyces dichotomus (Umphlett) D.J.S. Barr 1980

Phlyctochytrium dissolutum S.N. Dasgupta & R. John; Bull. Bot. Surv. India 30: 1–82, fig. 37. 1988;
Saprobic ?; Closterium; tank, garden; Lucknow U., INDIA

Phlyctochytrium furcatum Sparrow; Arch. Mikrobiol. 53: 178–180, figs. 1–9. 1966;
Saprobic; pine pollen; almost dry bog with Vaccinium; MICHIGAN, USA

Phlyctochytrium hirsutum Karling; Sydowia 20: 86–95, figs. 3–10. 1967;
Saprobic; purified shrimp chitin; soil; NEW ZEALAND

Phlyctochytrium incrustans Sparrow & Lange; Canad. J. Bot. 55: 1879–1890, figs. 19–22. 1977;
Saprobic; pine pollen; bog; Emmet Co., MICHIGAN, USA

Phlyctochytrium indicum Karling; Sydowia 17: 285–296, figs. 16–31. 1964;
Saprobic; pine pollen; brackish soil; Rhamnad Dist., Madras, INDIA

Phlyctochytrium irregulare Koch; J. Elisha Mitchell. Sci. Soc. 73: 108–122, figs. 13–24. 1957;
Saprobic; Liquidambar pollen and Paspalum leaves bait; wet soils; NORTH CAROLINA, USA

Phlyctochytrium kniepii Gaertner 1954 (not validly published)
Ξ Spizellomyces kniepii Gaertner ex D.J.S. Barr; Canad. J. Bot. 62: 1171–1201. 1984

Phlyctochytrium lackeyi Sparrow; Mycologia 68: 1233–1234, figs. 1–4. 1976;
Saprobic; pollen; Punch Bowl; Milford, FLORIDA, USA

Phlyctochytrium macrosporum Sparrow; Mycologia 70: 140–149, figs. 1–14. 1978;
Parasitic?; live pine pollen; neuston; Newnan’s Lake, FLLORIDA, USA

Phlyctochytrium mangrovii Ulken; Veröff. Inst. Meeresforsch. Bremerhaven 13: 217–230, figs. 1,2. 1972;
Saprobic; pine pollen and cattle hair; mangrove muds; Cananeia, SAO PAULO, BRAZIL

Phlyctochytrium marilandicum Sparrow; Mycologia 65: 1331–1336, figs. 1–11. 1973;
Saprobic; pollen; woodland soil; MARYLAND, USA

Phlyctochytrium megastomum Karling; Mycopathol. Mycol. Appl. 36: 165–178, figs. 1–17. 1968;
Saprobic; bleached corn leaves; soil; Rarotonga, COOK ISLANDS.
= P. irregularis Koch 1957 (Sparrow opinion, unpublished)

Phlyctochytrium mucosum Sparrow & I.J. Dogma; Arch. Mikrobiol. 89: 177–204, fig. 1, J–M. 1973;
Saprobic; pine pollen bait; soil; DOMINICAN REPUBLIC

Phlyctochytrium multidentatum Umphlett; Mycologia 61: 1021–1030, figs. 4–10. 1969;
Saprobic; sweet gum pollen; “soil & water” Chapel Hill, NORTH CAROLINA, USA

Phlyctochytrium neuhausiae (IF 4:417) Sparrow; Proc. Iowa Acad. Sci. 81: 2–5, figs. 10–14. 1974;
Saprobic; pine pollen; soil; Delphi, GREECE

Phlyctochytrium palustre Gaertner 1954 (not validly published);
? Spizellomyces palustris Gaertner ex D.J.S. Barr; Canad. J. Bot. 62: 1171–1201. 1984

Phlyctochytrium parasitans Sparrow & I.J. Dogma; Arch. Mikrobiol. 89: 177–204, fig. 2, T–U. 1973;
Parasitic; eggs of Achlya flagellata; damp soil; Carretara Duarte, HISPANIOLA

Phlyctochytrium peruvianum Knox (not validly published) PhD thesis, VPI, Blacksburg, VA. 1970;
= Spizellomyces punctatus (Koch) D.J.S. Barr 1984

Phlyctochytrium planicorne Atkinson 1909 emended by Umphlett & Holland; Mycologia 52: 429–435. 1960;
= Rhizophydium digitatum Scherffel 1926; T.W. Johnson: Norw. J. Bot. 22: 249–257. 1975
See: P.M. Letcher and M.J. Powell, 2005. Phylogenetic position of Phlyctochytrium planicorne [Chytridiomycota, Chytridiales] based on zoospore ultrastructure and partial nuclear LSU rRNA gene sequence analysis. Nova Hedwigia 80: 135–146.

Phlyctochytrium plurigibbosum D.J.S. Barr; Canad. J. Bot. 47: 991–997, figs. 44–52. 1969;
Saprobic; pine pollen; soil; Ottawa, ONTARIO, CANADA; Ξ Spizellomyces plurigibbosus (D.J.S. Barr) D.J.S. Barr 1984

Phlyctochytrium powhatanense (IF 4:250) Roane; Mycologia 65: 531–538, figs. 1–2, 15-20. 1973;
Saprobic; rotifer, chitin, snake skin; impoundment; Pulaski Co., VIRGINIA, USA

Phlyctochytrium punctatum Koch; J. Elisha Mitchell. Sci. Soc. 73: 108–122, figs. 1–16. 1957;
Saprobic; Liquidambar and pine pollen bait; soil; NEW GUINEA; Ξ Spizellomyces punctatus (Koch) Barr 1984

Phlyctochytrium recurvastomum Knox & Paterson; Mycologia 65: 373–387, figs. 11–18. 1973;
Saprobic; pollen; soil; McMurdo area, ANTARCTICA

Phlyctochytrium rhizopenicillium Knox (not valid pub.) PhD thesis, VPI, Blacksburg, VIRGINIA. 1970

Phlyctochytrium semiglobiferum Uebelmesser 1956
Ξ Gaertneriomyces semiglobiferus (Uebel.) D.J.S. Barr; Canad. J. Bot. 58: 2380–2394. 1980

Phlyctochytrium spinosum Sparrow; Mycologia 65: 1331–1336, figs. 12–16. 1973;
Saprobic; pollen ?; soil from spring-fed meadow; HawaiI, USA

Phlyctochytrium variable Rieth 1954; = Phlyctochytrium aureliae Ajello 1945; T.W. Johnson; Norw. J. Bot. 22: 249–257

Phlyctochytrium vaucheriae Rieth 1956; Ξ Blyttiomyces vaucheriae (Rieth) I.J. Dogma; Mycologia 61: 1149–1158. 1969

Phlyctochytrium verruculosum Knox (not valid pub.) PhD thesis, VPI, Blacksburg, VIRGINIA. 1970;
= Spizellomyces punctatus (Koch) D.J.S. Barr ; Canad. J. Bot. 58: 2380–-2394. 1980

Phlyctorhiza variabilis Karling 1947 Ξ Entophlyctis variabilis (Karling) Cejp; Omagiu lui Traian S?vulescu 129–-138. 1959; Ξ Catenophlyctis variabilis (Karling) Karling; Amer. J. Bot. 52: 133–138. 1965

Physodermataceae Transferred from Chytridiales to Blastocladiales; Lange & Olson: Trans. Brit. Mycol. Soc. 74: 449–-457. 1980

PIROMYCES Gold, Heath & Bouchop; Biosystems 21: 403–415. 1988; in Neocallimastigales;
= Piromonas communis sensu Orpin, 1977

Piromyces communis Gold, Heath & Bauchop; BioSystems 21: 403–-415, (figs. 1–10 in Orpin 1977). 1988;
Saprophytic; plant material; rumen of sheep. Ξ Piromonas communis Liebetanz sensu Orpin 1977

Piromyces dumbonicus J. Li (IF); Canad. J. Bot. 68: 1021–1033, figs. 2,4,9,12,13,19,23,24,31. 1990;
Saprobic; cellulosic; gut of elephant; NEW ZEALAND

Piromyces finnis O’Malley, Haitjema & Gilmore. Fungal Diversity 78: 187–193, 2016.  MB #551677. Feces of horse, Concord, MASSACHUSETTS, USA

Piromyces mae J. Li; Canad. J. Bot. 68: 1021–1033, figs. 1, 3, 5–8, 10, 11, 15–16, 20-22, 25-30, 32. 1990;
Saprobic; plant material; caecum of horse, NEW ZEALAND

Piromyces minutus Y.W. Ho; Mycotaxon 47: 285–293, figs. 1–14. 1993;
Saprobic; guinea grass (Panicum maximum); rumen of Sika deer (Cervus nippon); MALAYSIA

Piromyces rhizinflatus (IF 6:445) Breton et al.; FEMS Microbiol. Lett. 82: 1–8, figs. 1–2. 1991;
Saprobic; culture; dried faeces of Saharian ass; TUNISIA
Lectotype
: see Y.W. Ho & D.J.S. Barr; Mycologia 87: 656–678. 1995

Piromyces spiralis Y.W. Ho; Mycotaxon 48: 59–68, figs. 1–14. 1993;
Saprobic; guinea grass (Panicum maximum); rumen of katjang goat (Capra hircus);MALAYSIA

Pleotrachelus Zopf 1884 Synonym of Olpidium (Braun) Rabenhorst 1868; Karling, CI, p. 14. 1977

Pleotrachelus askaulos Bradley; Amer. J. Bot. 54: 577–582, fig. 8. 1967 (fossil);
Eocene Green River Formation; WYOMING, USA

Pleotrachelus bornovanus Sahtiyanci; Arch. Mikrobiol. 41: 187–228, figs. 50–79. 1962;
Parasitic; Lactuca, Spinacea, Beta, Nicotiana, Solanum et al.; soil; Ξ Olpidium bornovanus (Sahtiyanci) Karling; CI, p. 13. 1977; = O. radicale (sensu Lange & Insunza 1977); = O. cucurbitacearum D.J.S. Barr & Dias 1968. See Campbell & Sim; Canad. J. Bot. 72: 1136–1143. 1994.

Pleotrachelus brassicae (Woronin) Sahtiyanci; Arch. Mikrobiol. 41: 187–228. 1962;
Ξ Olpidium brassicae (Wor.) Dangeard; maintained as O. brassicae by Karling; CI, p. 18. 1977

Pleotrachelus virulentus Sahtiyanci; Arch. Mikrobiol. 41: 187–228, figs. 24–49. 1962;
Parasitic; Lactuca, Solanum, Beta, Nicotiana, Capsella; Ξ Olpidium virulentus (Sahtiyanci) Karling; CI, p. 13. 1977

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

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

Podochytrium chitinophilum Willoughby; Trans. Brit. Mycol. Soc. 44: 586–592, fig. 2, Pl. 38. 1961;
Saprobic; termite wings; Wastwater, E.L.D., UNITED KINGDOM

Podochytrium dentatum Longcore; Mycologia 84: 183–192, figs. 1–29. 1992;
Saprobic; chitin; lake, circumneutral pH; MAINE, USA

Podochytrium ellerbeckense Willoughby; Nova Hedwigia 5: 335–340, Pl. 53 a–w. 1963;
Saprobic; waterlily leaf stalks; garden pond; E.L.D., UNITED KINGDOM

POLYCARYUM Stempell [Blastocladiomycota, Blastocladiales] Zoologische. Abteilung fu¨ r Systematik, Geographie und Biologie der Tiere 15: 591–596 plus Tafel 31. 1902

Polycaryum branchipodianum Stempell, 1902. Zoologische. Abteilung fu¨ r Systematik, Geographie und Biologie der Tiere, 15: 591–596 plus Tafel, 31. 1902 . Parasite; fairy shrimp (Branchipus grubei; Branchiopoda, Anostraca). Johnson et al. in Freshwater Biology 51: 634–648. 2006 designated Figs 1–8 [Stempell, 1902 Zoologische Jahrbucher. Abteilung fu¨ r Systematik, Geographie und Biologie der Tiere 15: Tafel (Plate) 31, Figs 1–8] lectotype for P. branchipodianum and placed it in the Blastocladiales. P. branchipodianum is considered type species for genus Polycaryum.

Polycaryum laeve Stempell 1903; Archives for Protistenkunde 2: 349–363; 1903.Johnson et al.inFreshwater Biology51: 634–648 designated Stempell’s figures [1903, Archiv fu¨ r Protistenkunde, 2: Tafel (Plate) IX, Figs 1–27] as lectotype and a collection from Allequash Lake WISCONSIN, USA 26 June 2003 as epitype (New York Botanical Garden as 00705250).

POLYPHAGALES Doweld ( Chytridiomycetes) Index Fungorum 90:1 (2014); described from literature without molecular support. Molecular support by Karpov et al.  М И К О Л О Г И Я И Ф И Т О П А Т О Л О Г И Я 6: В ы п. 6 (2016).

Polyphagus asymmetricus Valkanov (no Latin diagnosis); Arch. Protistenk. 106: 565–568, Pl. 44. 1963;
Parasitic; Botrydiopsis; hyponeuston, southern BULGARIA

Polyphagus elegans Canter; Nova Hedwigia 5: 419–428, Pls. 74–76. 1963;
Parasitic; Ulothrix mucosum; plankton; Windermere, E.L.D., UNITED KINGDOM

Polyphagus euglenae Nowakowski, For TEM of zoospores see M.J. Powell; Can. J. Bot. 59: 2049–2061. 1981.

Polyphagus hyponeustonica (Valkanov) Karling; CI, p. 174. 1977 (sp. not validated)
Ξ Arnaudovia hyponeustonica Valkanov 1963 (no Latin diagnosis)

Polyphagus serpentinus Canter; Nova Hedwigia 5: 419–428, Pls. 71–73. 1963;
Parasitic; Spondylosium spp.; lakes; E.L.D., UNITED KINGDOM

Polyphagus starrii Johns; Mycologia 56: 441–451, figs. 1–6, 1964;
Parasitic; Eudorina, Pandorina, et al.; Stonewall Pond, MASSACHUSETTS, USA

POLYPHLYCTIS Karling [Chytridiales]; Sydowia 20: 86–95. 1967

Polyphlyctis cystofera (Willoughby) A. Batko; ZH, p. 183. 1975; Ξ Phlyctochytrium cystoferum Willoughby 1965

Polyphlyctis unispina (Paterson) Karling; Sydowia, 20: 86–95. 1967; Ξ Phlyctochytrium unispinum Paterson 1956

Polyphlyctis willoughbyi Letcher [Chytridiales, Chytridiaceae]; Fungal Biology. 2018 (in press) MycoBank no.:  825370. Saprobic, onion skin bait, Clyde River mud, AUSTRALIA: New South Wales, Conjola, Morton National Park

POWELLOMYCES Longcore, D.J.S. Barr & Désaulniers [Spizellomycetales]; Canad. J. Bot. 73: 1385–1390. 1995

Powellomyces hirtus Longcore, D.J.S. Barr & Désaulniers; Canad J. Bot. 73: 1385–1390, figs. 1–18. 1995;
Saprobic; pollen bait; soil; ONTARIO, CANADA

Powellomyces variabilis Powell & Koch ex Longcore, D.J.S. Barr & N. Désaulniers; Canad. J. Bot. 73: 1385–1390. 1995; Ξ Entophlyctis variabilis sensu Powell & Koch 1977; Ξ Geranomyces variabilis (Longcore et al.) D.R. Simmons [Spizellomycetales, Powellomycetaceae] in Mycologia 103: 1411–1420. 2011 ; not E. variabilis (Karling) Cejp 1959

Pringsheimiella dioica Couch 1939 (homonym and no Latin diagnosis)
Ξ Dictyomorpha dioica Couch ex Mullins; Amer. J. Bot. 48: 377–387. 1961

PROTRUDOMYCETACEAE Letcher [Rhizophydiales]. Mycological Research 112: 759–782. 2008.

PROTRUDOMYCES Letcher [Rhizophydiales, Protrudomycetaceae] Mycological Research 112: 759–782. 2008.

Protrudomyces laterale (A. Braun) Letcher. Mycological Research 112: 759–782. 2008.
Ξ Chtridium laterale A. Braun 1855. Ξ Rhizophydium laterale (A.Braun) Rabenh. 1868.
= Rhizophydium karlingii Sparrow 1960. Letcher (2008) Epitype=GenBank LSU rDNA sequence EF585628, ITS1-5.8S-ITS2 rDNA sequence EF585668, Culture (ARG 071) in ATCCand CBS

PSEUDOPILEUM Canter [Chytridiales]; Trans. Brit. Mycol. Soc. 46: 305–320. 1963

Pseudopileum unum Canter; Trans. Brit. Mycol. Soc. 46: 305–320, fig. 3. 1963;
Parasitic; cysts of Mallomonas sp.; plankton of Elterwater; E.L.D., UNITED KINGDOM

QUAERITORHIZA Longcore, D.R. Simmons & T.Y. James [Quaeritorhizaceae] MycoBank MB833680. Mycologia DOI: 10.1080/00275514.2020.1730136. 2020

QUAERITORHIZACEAE Longcore, D.R. Simmons & T.Y. James [order not yet determined] MycoBank MB833714. Mycologia DOI: 10.1080/00275514.2020.1730136. 2020

Quaeritorhiza haematococci Longcore, D.R. Simmons & T.Y. James MycoBank MB833715. Mycologia DOI: 10.1080/00275514.2020.1730136. 2020