THE GENUS PYTHIUM - An-Najah National University
THE GENUS PYTHIUM - An-Najah National University
THE GENUS PYTHIUM - An-Najah National University
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19( 18)<br />
20(18)<br />
21(20)<br />
22(20)<br />
23(22)<br />
24(23)<br />
25(3)<br />
26(4)<br />
27(26)<br />
28(27)<br />
Sporangia not inflated; antheridia usually absent<br />
rarely present and then monoclinous; oogonial<br />
projectiuns few, blunt<br />
Sporangia inflated; antheridia present; oogonial<br />
projections numerous, blunt<br />
Sporangia consisting of irregular subglobose elements<br />
Sporangia single not forming complexes<br />
<strong>An</strong>theridia often absent.oogonial projections<br />
conical, acute, up to II .um long<br />
<strong>An</strong>theridia present usually monoclinous; oogonial<br />
projections conical, blunt, up to 5 ..urn long<br />
Sporangia proliferous; antheridia absent<br />
Sporangia nonproliferous, antheridia present<br />
<strong>An</strong>theridia mostly hypogynous<br />
<strong>An</strong>theridia monoclinous and diclinous<br />
Oogonial projections numerous, conical and often<br />
curved<br />
Oogonia smooth or with a varying number of<br />
blunt conical or finger-like projections up to 5<br />
projections/ oogonium<br />
SPECIES WITH SUB GLOBOSE SPORANGIA<br />
Sporangia not proliferating or only hyphal<br />
swellings present<br />
Sporangia proliferating<br />
SPROANGIA SUBGLOBOSE, NON-PROLIFERATING,<br />
OR ONLY HYPHAL SWELLINGS PRESENT<br />
Sporangia consisting of subglobose elements only<br />
Sporangia consisting of both globose or pyriform<br />
elements and toruloid parts<br />
Subglobose zoosporic sporangia present<br />
No zoosporic sporangia, only hyphal swellings present<br />
Oospores plerotic or nearly so<br />
Oospores aplerotic<br />
12<br />
P. papillatum*<br />
P. periplocum<br />
P. oligandrum"<br />
P. acanthicum"<br />
21<br />
22<br />
P.anandrum*<br />
23<br />
P. echinulatum"<br />
24<br />
P. mamillatum*<br />
P. irregu/are*<br />
26<br />
45<br />
27<br />
P. pyri/obum<br />
28<br />
41<br />
29<br />
33
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