lehtisten
Lehtinen is a Finnish botanical term meaning a leaflet, the small segment of a compound leaf. The word is formed as a diminutive from lehti, using the suffix -nen to indicate a smaller or simpler leaf unit. The plural nominative is lehtiset, while the genitive plural is lehtisten, as in phrases like lehtisten reunat (the edges of the leaflets) or lehtisten pituus (the length of the leaflets).
In botany, leaflets are the individual segments that make up a compound leaf, such as those seen
Usage of the term lehtinen is specialized and mostly found in botanical texts, floras, and educational materials