microsporophylln.
/ˌmʌɪkrə(ʊ)ˈspɒrəfɪl/, /ˌmʌɪkrə(ʊ)ˈspɔːrəfɪl/, U.S. /ˌmaɪkroʊˈspɔrəˌfɪl/ Botany.
A leaf or modified leaf which bears microsporangia.
ΘΚΠ
the world > plants > part of plant > leaf > [noun] > other types of leaf
ear leaf1835
microsporophyll1888
megaphyll1908
microphyll1908
megaphyll1918
1888 Encycl. Brit. XXIV. 130/2 Stamen = leaf bearing microsporangia (microsporophyll).
1910 A. C. Seward Fossil Plants II. xxii. 396 The microsporophylls of the Mesozoic Bennettitales produced their spores in sporangial compartments.
1976 P. Bell & D. Coombe tr. Strasburger's Textbk. Bot. (new ed.) iii. 598 These fundamental units of reproduction [sc. megasporangia and microsporangia] are borne singly or in groups on..branched supports which can be called mega- or microsporophylls (carpels and stamens).
1992 M. Ingrouille Diversity & Evol. Land Plants 115 In most gymnosperms the pollen sacs (microsporangia) are grouped together on the abaxial surface of special scale leaves called microsporophylls.
Derivatives
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1895 S. H. Vines Students' Text-bk. Bot. i. 78 When..the flower includes only microsporophylls, it is called microsporophyllary.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1888