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Key Number 1, Fungal Hyphae
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- Hyphae without cross wall (septa)
(Pythium
spp.)
- Hyphae with cross wall (septa)
- Hyphae branched at right angles, with
constrictions at branch origins; uniform hyphal diameter
(Rhizoctonia
spp.)
- Hyphae branch in Y's; non-uniform hyphal
diameter
(Sclerotinia
spp.)
*useful only to distinguish from Rhizoctonia
spp.
- Hyphae with clamp connections
(Typhula spp.)
*look for small, dark sclerotia embedded
in infected tissue
(Limonomyces roseipellis)
*Look for cottony pink mycellium on infected
patches of turf)
- (Basidiomycetes) Most of the fairy ring
fungi
*Look for white mycellium in the soil or
thatch at the outer edge of rings
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Hyphae w/out crosswalls
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Hyphae crosswalls and 900 Branching
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Hyphae
crosswalls and Y-Branching |
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Hyphae
w/ clamp connections |
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Sclerotia
embedded in leaf tissue |
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Return to the ID Key Page
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