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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.


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


(ˌmaɪ kroʊ spɔˈræn dʒi əm, -spoʊ-)

n., pl. -gi•a (-dʒi ə)
a sporangium containing microspores.
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
References in periodicals archive ?
(1984b) also drew comparisons between Ephedra pollination droplets and angiosperm nectaries, particularly since some species produce sterile ovulate structures on the distal ends of otherwise normal microsporangiate cones (Endress 1996).
If so, the production of sterile ovules by otherwise fertile microsporangiate strobli may reflect the ancestral condition (i.e., a functional bisporangiate compound cone) rather than a teratology.
Microsporangiate cones firm; sarcotesta with a fibrous layer;
This section is defined by its soft microsporangiate cones and
Microsporangiate strobili vary in size, from 1-3 cm long when
microsporangiate cones lack primary pit fields and that the BMAA is not
The microsporangiate strobilus of gymnosperms is simple, but within the Taxaceae and the Cephalotaxaceae there are clear examples of compound pollen strobili, and those that appear simple are currently interpreted to be reduced compound structures (Keng, 1969; Wilde, 1944, 1975).
A new interpretation of microsporangiate cones in Cephalotaxaceae and Taxaceae.