microsporangium

(redirected from microsporangia)
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to microsporangia: microsporocyte

mi·cro·spo·ran·gi·um

 (mī′krō-spə-răn′jē-əm)
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.

microsporangium

(ˌmaɪkrəʊspɔːˈrændʒɪəm)
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

mi•cro•spo•ran•gi•um

(ˌmaɪ kroʊ spɔˈræn dʒi əm, -spoʊ-)

n., pl. -gi•a (-dʒi ə)
a sporangium containing microspores.
[1880–85]
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 ?
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 containing thousands of microspores.
In light of the preceding, we can accept that there is enough morphometric and observable morphological differences between Zamia stevensonii, as here presented, and the other species to which it has been compared or with which it has been mistaken to warrant its inclusion as a new species, considering the geographic range, white emergent leaves, relatively small above or below-ground stems, small number of pollen cones per plant, smaller size of ovulate and pollen cones, and having microsporangia only on the abaxial surface of the microsporophylls.
The structure of glochidia was observed by immersing dry microsporangia in water:ethanol:glycerol (1:1:1) solution for 24 hours.
malinverniana mature well before microsporangia and that this lack of synchrony is expected to increase the chance of cross fertilization.
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.
For the microgametophytes, he sowed whole microsporangia on filter paper.
5] cm long, 8-64 abaxial microsporangia (rarely a few adaxially)