deffinitions

• Annulus is a ring, or circular band, found on the stipe, or stalk, of some mushrooms.
• Basidiospore is a sexual spore borne on a basidium.
• Basidium (-ia) is a terminal cell that bears terminal basidiospores (typically 4) formed following karyogamy and meiosis.
• Basidiocarp is a fruit body that bears basidia and basidiospores.
• Bifactorial mating, also called tetrapolar, is when sexual compatibility is determined by two genes, with two alleles at each locus.
• Brown rot is decay that removes the cellulose and hemicellulose components of wood, leaving the brown colored lignin.
• Chiastobasidium is a type of basidium whereby nuclear division occurs transverse to the long axis.
• Clamp connection is a small lateral bridge that arches over the septum of two adjoining cells; associated with secondary mycelium.
• Cortina is a cobwebby remnant of the partial veil found in some mushrooms.
• Dolipore septum is a septum that flares in the middle forming a barrel shaped structure that surrounds a central septal pore.
• Gleba is the inner spore bearing tissue of a gasteromycete or hypogeous fruit body.
• Gloeoplerous is a thin walled hypha with very long cells and many oil droplets.
• Hymenium is the spore bearing layer.
• Heterothallic is when sexuallycompatible nuclei arise from different parents; self sterile.
• Holobasidium is a basidium whereby nuclear division is not followed by septation; a 1 celled basidium.
• Hyphal body is a portion of mycelium that is fragmented from the rest of thallus.
• Hypogeous means occurring underground.
• Metabasidium is the stage in basidium development where meiosis occurs.
• Peridiole is a structure with gleba that is walled off and functions as a dispersal unit.
• Peridium is the outer wall of a fruit body.
• Phragmobasidium is a basidium which is divided by septa, usually transverse.
• Pileus is the cap of a mushroom.
• Pleomorphic means having more than one spore stage in its life cycle.
• Polyphyletic means not sharing a common ancestor.
• Resupinate means laying flat on a substrate.
• Septal pore cap is a curved double membrane arching over a septal pore.
• Septum (-ta) is a cross wall.
• Sterigma (-ata) is a small hyphal branch that supports a basidiospore.
• Stipe is the stalk of a mushroom.
• Teliospore is a thick walled resting spore in which karyogamy occurs in rusts and smuts.
• Unifactorial mating, also called bipolar, is when sexual compatibility is determined by a single gene with two alleles.
• Volva is the remnants of a universal veil found at the base of the stipe of some mushrooms.
• White rot is decay that selectively removes the lignin component of wood (delignification) or degrades lignin and other polysaccharides.