abruptly-pinnate

Thân thiện

The leaf is abruptly-pinnate, with a small pair of leaflets at its very tip.

Definition

1. Adjective: (In botany, describing a leaf shape) Pinnate, but terminating in a pair of leaflets at the apex, rather than a single terminal leaflet. This gives the leaf a symmetrical, forked appearance at its tip.

Usage

The term abruptly-pinnate is a highly specific botanical descriptor. It is used to classify and describe the precise arrangement of leaflets on a compound leaf's central stem (rachis). * It is primarily used in scientific, academic, or horticultural contexts. * It functions as an adjective, typically placed before a noun like "leaf."

Examples

• The abruptly-pinnate leaf of the Kentucky coffeetree () is a key identifying feature.
• Botanists noted the species has abruptly-pinnate compound leaves with 6 to 14 small leaflets.
• This characteristic, an abruptly-pinnate structure, distinguishes it from closely related species that have odd-pinnate leaves.

Advanced Usage

• Technical Description: In a formal botanical description, one might write: "Leaves are compound, abruptly-pinnate, with the rachis terminating in a pair of subequal leaflets."

Variants and Related Words

• Paripinnate (adj.): A synonym for abruptly-pinnate, meaning "even-pinnate," where the leaf rachis ends in a pair of leaflets.
• Even-pinnate (adj.): Another common synonym for abruptly-pinnate.
• Pinnate (adj.): The broader category; a leaf shape where leaflets are arranged on opposite sides of a common rachis.
• Odd-pinnate (adj.) / Imparipinnate (adj.): The contrasting leaf shape, where the rachis terminates in a single leaflet, resulting in an odd total number of leaflets.

Synonyms

• Paripinnate
• Even-pinnate

Antonyms

• Odd-pinnate
• Imparipinnate

Học thuật

Adjective

1. (of a leaf shape) pinnate with a pair of leaflets at the apex

Từ đồng nghĩa

• even-pinnate
• paripinnate