Botany. The relative position of leaves or other organs on an axis, when situated directly above one another. Cf. superposed, adj. 3.
| 单词 | θ21269 |
| 释义 | the world > plants > part of plant > (defined by) distribution, arrangement, or position > [noun] > orthostichy or parastichy (4) superposition1830 Botany. The relative position of leaves or other organs on an axis, when situated directly above one another. Cf. superposed, adj. 3. strophe1846 Botany. (See quot. 1866.) ? Obsolete. orthostichy1875 A vertical series of leaves attached directly above one another on an axis or shoot. Cf. parastichy, n. parastichy1875 A secondary spiral or series of members (leaves, scales, etc.) around an axis in a closely spaced spiral phyllotaxis. |
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