| 单词 |
phyllopodium |
| 释义 |
phyllopodium|fɪləʊˈpəʊdɪəm|
[f. phyllo- + podium.]
1. Bot. The base of a leaf stalk, or the main axis of a leaf.
1884F. O. Bower in Phil. Trans. R. Soc. CLXXV. 569, I therefore propose the term phyllopodium to express the whole of the main axis of the leaf, exclusive of its branches. 1923― Ferns I. v. 82 The branches are then arranged in two longitudinal rows, one on either side of a central stalk or rachis, which is continuous below into the stipe or petiole, often of considerable length. The whole of this, including petiole and rachis, may be styled the Phyllopodium. 1951McLean & Ivimey-Cook Textbk. Theoret. Bot. I. xvi. 653 Delpino..described the stem as a pseudaxis or phyllopodium. Ibid. xxii. 978 The mature leaf consists of three portions, the lamina, the petiole, and the leaf base or phyllopodium. Ibid. 979 (caption) Development of the phyllopodium as a leaf sheath.
2. Zool. (See quot. 1967.)
1926L. A. Borradaile in Ann. & Mag. Nat. Hist. XVII. 194, I have..argued in support of the view that all the post-antennulary limbs of the primitive crustacean were alike, and that they were flat structures with endites and exites. It is convenient to call such appendages ‘phyllopod limbs’ or phyllopodia, whether they occur in the Phyllopoda (Branchiopoda) or elsewhere. Ibid., The phyllopodium has all the essentials of a biramous limb. 1967P. A. Meglitsch Invertebr. Zool. xviii. 755/1 An unusual feature of the branchiopods is the soft, flattened type of trunk appendage characteristic of most of the groups. Covered with a delicate cuticle, they are flexible enough to move freely without segmentation. This type of appendage is known as [a] phyllopodium. |
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