Pythium, Pringsheim, 1858
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publication ID |
https://doi.org/ 10.11646/phytotaxa.309.2.4 |
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persistent identifier |
https://treatment.plazi.org/id/A14A87FC-FF8D-FFC4-AFB8-8675A4CF2B28 |
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treatment provided by |
Felipe |
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scientific name |
Pythium |
| status |
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Key to species in Pythium View in CoL View at ENA clade D
1. Antheridia hypogynous .............................................................................................................................................. P. hydnosporum View in CoL
1. Antheridia paragynous........................................................................................................................................................................2
2. ‘Budding-like’ sporangia and irregular ‘gemmae’ on the surface of sporangia present........................................... P. ornamentatum View in CoL
2. ‘Budding-like’ sporangia and irregular ‘gemmae’ on the surface of sporangia absent......................................................................3
3. Sporangia filamentous or toruloid......................................................................................................................................................4
3. Sporangia globose, oval, ellipsoidal or elongated..............................................................................................................................5 4. Oospores plerotic or nearly plerotic, antheridia monoclinous.................................................................................................. P. cedri View in CoL
4. Oospores aplerotic, antheridia diclinous ........................................................................................................................ P. periplocum View in CoL
5. Antheridia absent........................................................................................................................................................ P. amasculinum View in CoL
5. Antheridia present..............................................................................................................................................................................6
6. Oogonial spines blunt, 1–2 μm long ............................................................................................................................. P. acanthicum View in CoL
6. Oogonial spines acute, 5–7 μm long ............................................................................................................................. P. oligandrum View in CoL
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