Specialised Formation
Category : 11th Class
In higher forms the mycelium gets organised into loosely or compactly woven structure which looks like a tissue called plectenchyma. It is of two types :
Prosenchyma : It comprises loosely woven hyphae lying almost parallel to each other.
Pseudoparenchyma : If the hyphae are closely interwoven, looking like parenchyma in a cross-section, it is called as pseudoparenchyma.
In addition to above, the fungal mycelium may form some specialized structures as under :
Rhizomorphs : It is a 'root or string-like' elongated structure of closely packed and interwoven hyphae. The rhizomorphs may have a compact growing point.
Sclerotia : Here the hyphae gets interwoven forming pseudoparenchyma with external hyphae becoming thickened to save the inner ones from desiccation. They persist for several years.
Stroma : It is thick mattress of compact hyphae associated with the fruiting bodies.
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