Table 3.5Proposed taxonomic revision of Oomycota based on molecular sequence data
Kingdom: STRAMINIPILA
Phylum: Oomycota
Basal orders—Class(es) incertae sedis
Order Eurychasmales
Family Eurychasmaceae Eurychasmaa
Familyincertae sedisEctrogellaceae Ectrogellab
Familyincertae sedisLagenismataceae Lagenismab
Order Haptoglossales
Family Haptoglossaceae ~Haptoglossa
Order Olpidiopsidales s. lat.
Family Olpidiopsidacae s. lat. ~Olpidiopsiss. lat.
Family Pontismataceae Peterseniab,Pontismab
Family Sirolpidiaceae Sirolpidium
Order Haliphthorales
Family Haliphthoraceae Haliphthorus,Halocrusticida,Halioticida
Order incertae sedis
Familyincertae sedisPseudosphaeritacae Pseudosphaerita
Familyincertae sedisRozellopsidaceae Rozellopsis
Class: Saprolegniomycetes
Order Atkinsiellales
Family Atkinisellaceae Atkinsiella
Family Crypticolaceae Crypticola
Order Leptomitales
Family Leptomitaceae Apodachlya,Apodachlyella,Leptomitus
Family Leptolegniellaceae s. lat. Aphanomycopsisb,Brevilegniellab,Chlamydomyzium,
Cornumyces,Ducellieriab,Eurychasmopsisb,
Leptolegniellab,Nematophthorab,Pythiellab
Order Saprolegniales
Family Verrucalvaceae ~Aphanomyces,Pachymetra,Plectospira,
Sommerstorffiab,Verrucalvus
Family Achlyaceae Achlya s.str,Brevilegnia,Dictyuchus,Thraustotheca
Family Saprolegniaceae s.str. Aplanes,Aplanopsis,Calyptralegnia,Geolegnia,
Isoachlya,Leptolegniab,Newbya,Protoachlya,
Pythiopsis,~Saprolegnia,Scoliolegniab
Class: Peronosporomycetes
Order Rhipidiales
Family Rhipidiaceae Araiosporab,Aqualinderellab,Mindeniellab,
Nellymycesb,Rhipidiumb,Sapromyces
Order Albuginales
Family Albuginaceae Albugo,Pustula,Wilsonia
Order Peronosporales s. lat.
Family Salisapiliaceae Salisapilia
Family Pythiaceae s. lat.
Subclades with holocarpic “lagenidiaceous” thalli Gominocheateb,~Lagenidium,Lagenab,
~Myzocytiopsis (part)
Subclades with spp. with filamentous sporangia (Pythium
clades A B C D)
Pythiogeton,~Pythiums.str,Subclades with more or less globose sporangia (Pythium
Clades E F G H I J)
Sphaerosporangiumc,Elongisporangiumc,Family Peronosporaceae s. lat.
Part 1 Most marine saprotrophicHalophytophthorasp.
andPythiumK clade
~Halophytophthoras. lat.,Phytopythium(syn.
Ovatsporangiumc)
Part 2:Phytophthoraclades 1–5 (with papillate
sporangia);Phytophthoraclades 6–10 (with non or
semi-papillate sporangia)
~Phytophthora(continued)Systematics of the Straminipila: Labyrinthulomycota, Hyphochytriomycota, and Oomycota 51