A central ridge along the back or convex surface of any organ or structure, as a leaf, a petal, a glume of grass, the lower mandible of a bird, etc…
| 单词 | θ21853 |
| 释义 | the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > petal > of particular shape or position (10) keel1597 A central ridge along the back or convex surface of any organ or structure, as a leaf, a petal, a glume of grass, the lower mandible of a bird, etc… vexillum1703 Botany. The large erect upper petal of a papilionaceous flower. Cf. standard, n. 6b. standard1725 Botany. The large erect upper petal of a papilionaceous flower. Cf. vexillum, n. 2. ala1731 Botany. Each of the two lateral petals of a papilionaceous flower; = wing, n. 11c. wing1776 Botany. Each of the two lateral petals of a papilionaceous flower: = ala, n.1 2c. banner1785 Botany. The vexillum of a papilionaceous flower. vexil1813 The large erect upper petal of a papilionaceous flower; a vexillum (vexillum, n. 2). winglet1855 A little wing; also transferred something resembling a little wing, as a petal. keel-petal1876 see 5a. pterygium1896 Botany. A wing-shaped petal or other plant part. Obsolete. rare. |
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