| 单词 | leaf trace |
| 释义 | > as lemmasleaf trace leaf trace n. [after German Blattspur (J. Hanstein 1858, in Jahrb. f. wissensch. Bot. 1 242)] Botany an extension of conducting vessels from the vascular bundle of a stem into a leaf. ΚΠ 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 431 We have here ‘common’ bundles [of Phanerogams], each of which has one arm that ascends and bends out into the leaf, and another which descends and runs down into the stem; the latter is called by Hanstein the ‘inner leaf-trace’ [Ger. innere Blattspur]. 1910 Bot. Gaz. 50 413 A forking leaf trace and even a large leaf blade may occur in the lycopsid series. 2001 Ann. Bot. 88 1190/1 Stipules may be served by separate stipular traces and/or by vascular branches of the leaf traces. < as lemmas |
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