odd-pinnate leaf

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odd-pinnate leaf

An odd-pinnate leaf from a rose bush lies on a wooden garden table.

Definition

Noun: - A compound leaf structure where leaflets are arranged in pairs along a central stem (rachis), with one unpaired leaflet terminating at the apex (tip). This is a specific botanical term describing the appearance of a leaf.

Usage

This term is used in botany and plant sciences to precisely describe leaf morphology. - The rose plant is easily identified by its odd-pinnate leaf. - Botanists noted that the ash tree has an odd-pinnate leaf structure.

Advanced Usage
  • The term is often used in dichotomous keys for plant identification.
  • It can be contrasted with "even-pinnate leaf," which has no terminal leaflet, ending in a pair of leaflets.
Variants and Related Words
  • Odd-pinnate (adjective): Describing the characteristic of having such a leaf structure.
    • The hickory tree has odd-pinnate compound leaves.
  • Pinnately compound leaf: The broader category to which odd-pinnate leaves belong.
  • Terminal leaflet: The single leaflet at the apex of an odd-pinnate leaf.
Synonyms
  • Imparipinnate leaf: A technical synonym used in botanical taxonomy.
Related Phrases/Idioms

This is a highly technical term with no common idiomatic or phrasal verb usage.

odd-pinnate leaf

An odd-pinnate leaf from a rose bush lies on a wooden garden table.

Noun
  1. a pinnate leaf with a single leaflet at the apex