metaphloemn.
/ˌmɛtəˈfləʊɛm/, U.S. /ˌmɛdəˈfloʊˌɛm/, /ˌmɛdəˈfloʊəm/ Botany.
The later-formed part of the primary phloem, maturing after elongation of the plant tissue is complete. Cf. metaxylem n.
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > xylem or phloem
liber1753
phloem1872
xylem1875
protophloem1884
protoxylem1887
internal phloem1891
metaxylem1894
hadrome1898
leptome1898
metaphloem1900
included phloem1910
1900 B. D. Jackson Gloss. Bot. Terms 158/1 Metaphloem, Van Tieghem's term for a simultaneous growth of bast-tissue with the metaxylem.
1901 Bot. Gaz. 32 389 Parenchymatous cells are sometimes met with in isolated positions in the metaphloem.
1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) iv. 89 The metaphloem and metaxylem differentiate in the region where growth in length has ceased.
1965 K. Esau Plant Anat. (ed. 2) xii. 292 The sieves of the metaphloem are commonly longer and wider than those of the protophloem.
1990 Jrnl. Exper. Bot. 41 819/1 The early maturing metaxylem..is separated from the metaphloem..or companion cell of the protophloem..by a single cell.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1900