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microsporangium
(redirected from microsporangia)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.
mi·cro·spo·ran·gi·um  (mkr-sp-rnj-m)
n. pl. mi·cro·spo·ran·gi·a (-j-)
A structure in which microspores are formed.
micro·spo·rangi·ate (-j-t) adj.
microsporangium [ˌmaɪkrəʊspɔːˈrændʒɪəm]
n pl -gia [-dʒɪə]
(Life Sciences & Allied Applications / Botany) the structure in certain spore-bearing plants in which the microspores are formed: corresponds to the pollen sac in seed plants Compare megasporangium
microsporangium  (mkr-sp-rnj-m)
Plural microsporangia
A plant structure in which microspores are formed. The pollen-producing male cones of a pine consist of many microsporangia, where the microspores of the pine develop into pollen grains to be dispersed.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.microsporangium - a plant structure that produces microsporesmicrosporangium - a plant structure that produces microspores
sporangium, spore case, spore sac - organ containing or producing spores
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The reproductive structures of the pteridosperms were likewise phylogenetically terminal; later the microsporangia became aggregated into synangia and the seeds were borne on modified or unmodified portions of the frond.
The telome theory by Wilson, Carl L. / The Botanical Review
Microsporophylls aggregated into determinate cones and bearing numerous microsporangia (pollen sacs) on abaxial surfaces, with a simple sterile apex, which is often produced into an upturned spine; microsporangia opening by slits; pollen cymbiform, monosulcate.
The genus Cycas (Cycadaceae) in Vietnam by Hill, Ken D.; Nguyen, Hiep T.; Loc, Phan K. / The Botanical Review
Pollen strobili of numerous microsporophylls with sporangia located on the abaxial surface and rarely on the adaxial surface; microsporangia many, in groups of 2-5 and dehiscing by longitudinal slits; pollen monosulcate, proximal sculpturing psilate to foveolate.
Cycads of Colombia by Stevenson, Dennis Wm. / The Botanical Review
 
 
 
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