megasporangen.
/ˌmɛɡəspəˈrandʒ/, U.S. /ˌmɛɡəspəˈrændʒ/ Botany. Now rare.
= megasporangium n.
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the world > plants > particular plants > moss > [noun] > club-moss or moss-like ferns > parts of
powder1672
oophoridium1847
oophorid1848
oosporangium1857
macrosporangium1862
rhizophore1875
megasporangium1886
megasporange1889
protophyll1891
prophyll1971
1857 A. Henfrey Elem. Course Bot. 599 In Pilularia,..all the parent-cells but one disappear in the megaspore-sporanges.]
1889 A. W. Bennett & G. R. M. Murray Handbk. Cryptogamic Bot. 11 It [sc. a spore-case] is a megasporange or a microsporange, according as it contains megaspores or microspores.
1907 Proc. Royal Soc. B. 79 473 The megasporange gives rise to but one thin-walled spore.
1922 Bot. Gaz. 74 133 Useful structures..can be formed by the elaboration of the vegetative tissue surrounding masses of sporogenous tissue, as has recently been demonstrated in the megasporange of Mazocarpon.
1952 Bull. Torrey Bot. Club 79 73 Juliano states that ‘the nucellus of the megasporange undergoes enlargement soon after fertilization’.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022).
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n.1889