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单词 pericladium
释义 pericladium Bot.|pɛrɪˈkleɪdɪəm|
[mod.L. (Link 1825), f. Gr. περί around + κλάδος branch.]
The sheathing base of a leaf-stalk when expanded so as to surround the supporting branch.
1832Lindley Introd. Bot. 95 When the lower part only of the petiole is sheathing, as in Umbelliferæ, that part is sometimes called the pericladium.1856in Henslow Dict. Bot. Terms.
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