This genus is distinguished from all other genera of agarics by the distinctive pseudorhiza and its obligate association with termite nests. The cap of the fruit body has a prominent umbo; the cuticle consists of repent, filamentous and hyaline hyphae; the gills are usually free to subadnate, either having a notch at the point of attachment to the stipe, or have a decurrent tooth; hymenophoral trama initially bilateral, then becoming regular — subintermixed; cystidia present; basidia normal; spores smooth, ellipsoid, hyaline, with continuous homogeneous, rather thin-walled; spore-print pink; stipe with a long and tapering pseudorhiza reaching the termite nest some distance below the soil surface. (The genus obtains its nourishment from the material of the termite nest which is constructed of woody material masticated by the termite workers). Context compact, fleshy, or somewhat tough in the stipe; hyphae without clamp connections. The primordia usually develop in the holes of the termite nests and can be observed by removing the soil from where the carpophore is growing and exposing the nest.
KeywordsFruit Body Practical Importance Clamp Connection Agaricus Bisporus Termite Nest
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