Decurrent

Part of speech: adjective

Definitions

1. Characterized by leaves that extend downward along the stem, creating a kind of attachment that it shares with the stem itself
2. denoting a type of leaf arrangement that transitions toward a descending position
3. referring to plant structures that exhibit a growth pattern where parts are continued along the axis, often enhancing stability and support

Etymology: "Decurrent" is a botanical and anatomical term describing a leaf or other structure whose base extends downward along the stem, so that the tissue appears to run down the stem below the point of attachment. A leaf of this kind seems to flow into the stem rather than sitting on it, which is why the image of running down suits it so well. The word is borrowed from Latin "decurrens," the present participle of "decurrere," built from "de," meaning "down," and "currere," meaning "to run." Latin "currere" is the same root that gives English "current," "course," and "concur," so the word shares its ancestry with several familiar terms, even though its literal sense is a physical downward run.