Hyphomycete glossary

Glossary for hyphomycetes

acroauxic
elongation of a conidiogenous cell is from an apical growing point

basauxic
elongation of a conidiogenous cell is from a basal growing point

blastic
cell walls involved in development of conidia

blastic-acropetal
repeated budding at the tip of the conidiogenic hypha, so that a chain of spores is formed with the youngest spores at the tip

blastic-annellidic
each spore separates and leaves a ring-shaped scar inside the scar left by the previous spore),

blastic-sympodial
repeated sideways spore formation from behind the leading spore, so that the oldest spore is at the main tip

blastic-synchronous
simultaneous spore formation from a central cell, sometimes with secondary acropetal chains forming from the initial spores

blastic-phialidic
the spores arise and are ejected from the open ends of special conidiogenic cells called phialides, which remain constant in length

blastic-retrogressive
spores separate by formation of crosswalls near the tip of the conidiogenic hypha, which thus becomes progressively shorter

collarette
recurved edge of phialide at tip

determinate
acroauxic growth terminates in conidigenous cell (see percurrent)

discrete
conidiogenous cells are separate from main branhces/axes

enteroblastic
outer wall is not involved in development of conidia

holoblastic
all the cell wall layers of the conidiogenous cell are involved in development of conidia

integrated
conidiogenous cells are in man branhces/axes

macronematous
conidiophores differ from other hyphae

meristem
area of undifferentiated cells (e.g. growing "tip")

meristematic
conidiophore grows behind apex

micronematous
all hyphae are similar

monotretic
conidia formed by protrusion through outer wall at only one point

phialide
a conidiogenous cell where the meristematic end remains unchanged as successive conidia are emitted

phialidic
Producing conidia with neither cell wall

percurrent
growth not terminated when conidiophore forms (see determinate)

polytretic
conidia formed by protrusion through outer wall at multiple points

psuedosepta
a division of a conidium having the appearance of septum but the divisions are all internal

sympodial
main axis elongates by succession of apices (on one foot)

thallic-arthric
double cell walls split the conidiogenic hypha into cells that develop into short, cylindrical spores called arthroconidia; sometimes every second cell dies off, leaving the arthroconidia free

thallic-solitary
a large bulging cell separates from the conidiogenic hypha, forms internal walls, and develops to a phragmospore

tretic
enteroblastic conidia are formed by protrusion through outer wall