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n. pl. mi·cro·spo·ran·gi·a (-jē-ə)
A structure in which microspores are formed.

mi′cro·spo·ran′gi·ate (-jē-ĭt) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -gia (-dʒɪə)
(Botany) the structure in certain spore-bearing plants in which the microspores are formed: corresponds to the pollen sac in seed plants. Compare megasporangium
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌmaɪ kroʊ spɔˈræn dʒi əm, -spoʊ-)

n., pl. -gi•a (-dʒi ə)
a sporangium containing microspores.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.microsporangium - a plant structure that produces microsporesmicrosporangium - a plant structure that produces microspores
sporangium, spore case, spore sac - organ containing or producing spores
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
All three species have one pair of microsporangia on each lateral androecium lobe and two pairs on the central lobe, as in Chloranthus (except C.japonicus, in which the central lobe is sterile).
Simultaneously with the changes occurring in the walls of the microsporangia, four groups of hypodermal cells differentiated near each of the four corners of young anthers (Fig.
Each stamen has four microsporangia arranged in two thecae.
Microspores and pollen grains are produced from pollen mother cells (Microsporocytes), PMCs within loculus anthers (microsporangia or pollen sacs) of the flower.
Systematic significance of pollen arrangement in microsporangia of Poaceae and Cyperaceae: review and observations on representative taxa.
Each of the spirally arranged microsporophylls (scales) contains two microsporangia, and each microsporangia contains many microspore mother cells, which undergo meiosis to produce four haploid microspores.
1-18) shows only one of the four microsporangia of an anther in cross-section.
(1989) also made additional pertinent field observations: (1) Ephedra pollen is easily lofted from microsporangia even at low wind speeds, or with minimal mechanical perturbation of stems, (2) neither flies nor bees were seen going from one plant to another, and (3) flies and introduced honey bees were seen acting as "nectar thieves" and removed pollination droplets in their entirety during these comparatively rare insect visitations.
microsporangia: Receptacle in which microspores (male spores) are developed.