microconidium

noun

mi·​cro·​co·​nid·​i·​um -kə-ˈnid-ē-əm 

plural microconidia -ē-ə 

: a conidium of the smaller of two types produced by the same species and often differing in shape (as in members of the genus Fusarium) compare macroconidium

microconidial

-ē-əl 

adjective