Rhizomorphs / Armillaria on Oak.

[Fungus]

Just read this from "forestpathology.com"........

A. borealis - Rhizomorph branching dichotomous

A. calvescens - Rhizomorph branching monopodial

A. cepistipes - Rhizomorphs abundant; branching monopodial

A. gallica - Rhizomorphs large (up to 5 mm diameter) and abundant; branching monopodial

A. luteobubalina - Rhizomorphs absent or sparse

A. ostoyae - Rhizomorphs usually thin, delicate and sparse; branching dichotomous.

A. mellea - (Nothing listed about rhizomorphs) ???

 

Are you 100 % convinced, that this information is microscopically checked by identifying all of the 6 or 7 species while fruiting in combination with rhizomorphs attached to the mycelium and/or the bases of the FB's ?

[David Humphries]

Are you 100 % convinced, that this information is microscopically checked by identifying all of the 6 or 7 species while fruiting in combination with rhizomorphs attached to the mycelium and/or the bases of the FB's ?

 

No, but the author appears to have credit.

 

Plant Pathologist

USDA Forest Service

 

 

Forest Pathology - About this site

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[Alinicoll]

Al & David,

1. Armillaria species can not be distinguised by the diameter of their rhizomorphs.

2. That must be waiting for dead wood to become exposed and available then, because Armillaria lutea (= A. gallica/bulbosa) is considered to be a saprotrophic species.

 

Thank you for clarifying