even-pinnate leaf
Definition
Noun: * A pinnate leaf with a pair of leaflets at the apex: A compound leaf where smaller leaflets are arranged in pairs along a central stem (rachis), and which terminates in a pair of leaflets rather than a single terminal leaflet. This structure is also known as paripinnate.
Usage
This is a specific botanical term used to describe the morphology of a leaf. It is primarily used in scientific, academic, or horticultural contexts.
Examples
- The even-pinnate leaf of the black walnut tree is a key identifying feature.
- Botanists noted that the species possesses even-pinnate leaves with six to eight pairs of leaflets.
- In contrast to an odd-pinnate leaf, an even-pinnate leaf lacks a single terminal leaflet at its tip.
Advanced Usage
- The term paripinnate is a direct synonym used in formal botanical literature.
- This characteristic is often contrasted with odd-pinnate (or ) leaves, which have a single terminal leaflet.
Variants and Related Words
- Paripinnate (adj.): The adjectival form describing the condition of having an even-pinnate leaf structure.
- The plant has a paripinnate leaf arrangement.
- Pinnate leaf (n.): The general category of compound leaves with leaflets arranged along a central rachis.
- Leaflet (n.): Each of the smaller leaf-like units that make up a compound leaf.
- Rachis (n.): The central stem or axis of a pinnate leaf to which the leaflets are attached.
Synonyms
- Paripinnate leaf
Antonyms
- Odd-pinnate leaf
- Imparipinnate leaf
Noun
-
a pinnate leaf with a pair of leaflets at the apex
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