Rhizomorph


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

rhizomorph

[′rī·zə‚mȯrf]
(botany)
A rootlike structure, characteristic of many basidiomycetes, consisting of a mass of densely packed and intertwined hyphae.

Rhizomorph

 

a long, rope-like aggregation of intertwined fungal threads. Rhizomorphs promote the conduction of water and nutrient matter from the branched mycelium in the substrate to the fruiting bodies. They are characteristic of a number of Basidiomycetes, mainly of the Hymenomycetes group.

Mentioned in ?
References in periodicals archive ?
Rhizomorphs Dark brown coming near to black, Black, penetrating soil with glossy, densely penetrating top underground tree remains, soil, monopodially ramifying on monopodially ramifying.
Basal mar usually extensive, comprising two tissues: 1) superficial, tough-tomentose on subtratum surface, white, usually discretely bounded; and 2) amorphous within substratum, but with slender innate rhizomorphs, often extensively binding litter, white to cream-colored, unchanging when handled.
Also unique are the delicate snow white rhizomorphs which remain so on drying, usually a characteristic of spiny-spored Ramaria taxa.
Mature basidioma gray with violet tone up to 125 mm high attached to the substratum by well-developed mycelial base; Rhizomorphs off white.
Volva present at the base of the stipe, 24-31 X 21-25 mm, saccate, yellowish white (4A2), smooth, with basal rhizomorphs.
The rhizomorphs grow from the soil, usually entering the house from hidden, dank areas such as crawl spaces and continuing unseen behind the walls and under linoleum.
Below this level, there is abundant purple mottling, large rhizomorphs and rhizoliths, and differential cementation including calcitecemented intraformational conglomerate, and no beds of aeolian sandstone.
Criteria for sorting included ramification colour size associated hyphae rhizomorphs cystidia etc.
Once inside the outer layers of root tissue, the rhizomorphs start to develop the typical white fungal mycelium that attacks the conducting tissue and slow die back, premature leaf fall, poor flowering, oozing watery or resinous material and splitting of bark near ground level all show themselves as the outward symptoms of the fungus.
Role of lichen rhizomorphs in thallus propagation and substrate colonization.
Vinelike rhizomorphs branching from the soil to foundations, framing or the underside of flooring.
Texture of system was finely grainy, host tissue not visible under the sheath; Rhizomorphs absent, Emanating hyphae absent (Fig.