Definition of sporangium in US English:


nounPlural sporangia

  • (in ferns and lower plants) a receptacle in which asexual spores are formed.

    • ‘In each case, fragments of lamina were collected with mature but closed sporangia.’
    • ‘Thousands of sporangia were also collected on a moss covered decaying conifer log on a ground site at night with the use of a flashlight.’
    • ‘The fungus can be identified microscopically by the production of its reproductive structures: the sporangiophores and sporangia.’
    • ‘A parental fern grows, protects, and ultimately ejects its spores from a stalked structure: the sporangium.’
    • ‘None of these sporophyte plants produced fertile sporophylls bearing sporangia.’


Early 19th century: modern Latin, from Greek spora ‘spore’ + angeion ‘vessel’.