单词 | leaf sheath |
释义 | > as lemmasleaf sheath leaf sheath n. Botany an expanded base of a leaf or petiole which surrounds the stem; (also) in horsetails, a sheath of fused leaves which surrounds the stem at each node. ΚΠ 1830 J. Lindley Introd. Nat. Syst. Bot. p. xlvii Leafsheaths entire..Leafsheaths slit. 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 370 [Equisetum Telmateia and E. arvense] After they have formed several foliar girdles and their apex is covered by a firm envelope of leaf-sheaths, they break through the base of the parent leaf-sheaths. 1944 R. Matheson Entomol. for Introd. Courses xvii. 399 The eggs hatch in about a week and the maggots feed between the leaf-sheath and the stem. 2001 Ann. Bot. 88 1208/1 The stem of the Musaceae is completely composed of overlapping leaf sheaths. < as lemmas |
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