| 词汇 | venation |
| 释义 | venation noun[ U ] biology specializeduk /viːˈneɪ.ʃən/ us /viːˈneɪ.ʃən//vəˈneɪ.ʃən/ the pattern of veins that form the frame of a leaf or an insect's wing: These species have a different leaf venation to those of the other two classes. The wings are pale brown with darker brown venation. The shape and venation of the forewing of this species is characteristic. Drones showed a higher frequency of wing venation abnormalities than honey bee workers. Most identifications were based on characteristics such as leaf form, venation, bark odour, colour, and texture. Parts of plants axil bark bilobed blade bulb caning cascara sagrada corolla endodermis inflorescence knot pistil rooty rosella seed coat seed pod sessile sting taproot tubule You can also find related words, phrases, and synonyms in the topics: The development & parts of insects Examples of venationvenation Also, the wing outline becomes more elongate and main venation phyloblattoidlike. The wing venation (fig. 12, c) is rather characteristic, the anterior fork-cell being relatively short. Damage types 7, 9 and 10 represent localized rubbing; damage type 8 depicts rubbing along the wing venation. Venation is dichotomous, with the distal veins curved away from the midline of the leaf towards the margins. In one specimen a curious malformation of the wing venation was seen; on both sides the apical parts of the sixth vein were missing. I, 2), and when denuded (figs. 4-7), the venation can be seen with little difficulty in properly prepared specimens. The venation is dense, with fine veins radiating from base of leaf, producing a venation density of c. 40 veins per centimetre along the leaf margin. Leaflets show distinct venation, with the midrib raised top and bottom of the leaf. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Venation of the leaves may be palmate to reticulate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was on the basis of the morphology of the radular teeth, the dorsal venation and biological observations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Part of it is achieved through markings, and part through the incorporation of the actual venation of the wing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The wing venation is distinctive in that the costal area has numerous cross veins. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They have a visible venation, though this is nowhere near as marked as on the leaves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The hindwings are whitish with darker venation and a dark shaded band at the margin. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Details of wing venation determine subfamilies and lower taxa. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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