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 (hĕt′ər-ə-spôr′əs, hĕt′ə-rŏs′pər-əs)
Producing two types of spores differing in size and sex.

het′er·o·spo′ry n.
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Noun1.heterospory - the development of both microspores and megaspores
monogenesis, sporulation - asexual reproduction by the production and release of spores
References in periodicals archive ?
To these revisions, she added papers on reproductive biology and biogeography of the Pteridaceae, notably studies of apogamy in Pellaea (1968, 1972), and of incipient heterospory in Platyzoma (1964, 1967).
Platyzoma--a Queensland fern with incipient heterospory.