perisporangiumn.
/ˌpɛrᵻspəˈran(d)ʒɪəm/, U.S. /ˌpɛrəspəˈrændʒiəm/, /ˌpɛrəspoʊˈrændʒiəm/ Botany. rare.
A structure surrounding a sporangium; esp. the indusium of a fern.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > parts of or related to > spore-case
perithecium1800
conceptacle1819
sporangium1821
sporidium1821
receptacle1824
sporangiolum1824
spore-case1836
perispore1851
polyspore1855
perisporangium1856
sporange1857
thalamium1861
sporidiole1863
theke1872
macrosporange1882
polysporangium1890
1856 J. S. Henslow Dict. Bot. Terms 132 Perisporangium, synonyme for the indusium of ferns.
1867 J. Hogg Microscope (ed. 6) ii. i. 272 A number of sporidium-bearing filaments emanate from a kind of membrane at the base of a spheroidal cellular perisporangium.
1999 Proc. National Sci. Council Republic of China B. 23 85 There are two forms of microsporophyll which bear 2–4 abaxial hyposporangia or 4–6 whorled perisporangia on a stalk.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1856