heterosporous


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to heterosporous: homosporous

heterosporous

/het·er·os·po·rous/ (het″er-os´po-rus) having two kinds of spores, which reproduce asexually.
Mentioned in ?
References in periodicals archive ?
Plants arising from the ground in tufts; stems a corm; leaves quill-like, 1-3 dm long and 1-3 mm wide; heterosporous with sporangia on the adaxial leaf bases.
Stems creeping close to the ground to erect, sometimes forming large dense mats, often occurring as individual stems on clay banks; leaves in 4 row, margins finely toothed; heterosporous with terminal strobili 1-2 cm long, 4-angled.
Isoetes is heterosporous, with each leaf a potential microsporophyll or megasporophyll.
The remaining living ferns consist of heterosporous leptosporangiate genera that are either amphibious (Marsileales) or floating aquatics (Salviniales; Gifford & Foster, 1989).
These include 13 extant homosporous filicaleans, 17 extinct homosporous and heterosporous ferns from Paleozoic strata, five extant and one extinct heterosporous leptosporangiate ferns, two extant marattiaceous ferns, two extant ophioglossaceous ferns, one extant and two extinct equisetophytes, both extant homosporous psilotophytes (i.
Comparative leaf structure of six species of heterosporous ferns.