V2EX petiolate

Petiolate

Definition / 释义

(植物学)具叶柄的;有柄的。常指叶片通过叶柄(petiole)与茎连接,而不是“无柄(sessile)”直接贴附在茎上。(在某些语境中也可泛指“有柄连接的”结构。)

Pronunciation / 发音(IPA)

/ptlet/

Examples / 例句

The plant has petiolate leaves with long, slender stalks.
这种植物的叶子是有叶柄的,叶柄又长又细。

In the field guide, the species is identified by its petiolate, serrated leaves and opposite arrangement along the stem.
在野外图鉴中,这个物种通过“具叶柄、具锯齿的叶片”以及“沿茎对生的叶序”来辨识。

Etymology / 词源

petiolate 来自 petiole(叶柄)+ 形容词后缀 -ate。而 petiole 源于拉丁语 petiolus(“小脚/小柄”之意),用来形象描述叶片下方像“柄”一样的连接部分;因此 petiolate 字面含义就是“带有叶柄的”。

Related Words / 相关词汇

Literary Works / 文献与著作中的用例

  • Flora of North America(《北美植物志》)物种形态描述中常用 petiolate 区分“具叶柄/无叶柄”的叶。
  • Gray’s Manual of Botany(《格雷植物志》)传统分类检索与形态学描述里频繁出现该词。
  • Botany: An Introduction to Plant Biology(Raven 等,《植物学:植物生物学导论》)讲解叶的结构时常用 petiolate 对照 sessile
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