serraties

Serraties is a term used in descriptive biology to refer to the presence of serrated or saw-toothed edges on various structures such as leaves, teeth, or blade-like surfaces. Derived from the Latin serratus meaning saw-edged, serraties appears in some scientific and historical writings as a plural noun referring to instances of serrate morphology. In modern English, the adjectives serrate and the noun serration are typically used, and serraties is encountered mainly in specialized or older texts and in cross-language usage.

In botany, serraties describe leaf margins bearing sharp teeth with pointed tips that usually face toward the leaf apex. This margin type is contrasted with crenate margins, which have rounded teeth, and with dentate margins, whose teeth point outward. There are subtypes such as doubly serrate, where each primary tooth carries a smaller tooth on its inner edge. Leaves that display serraties are common in temperate plant groups, including many species of roses (Rosa) and birches (Betula), though margins can vary within a species.

In other disciplines, serrations or serrate edges describe tooth-like or saw-toothed patterns on non-biological surfaces or on fossil specimens, and may be used to describe blade edges in tools and weapons, blade-like shells, and certain dental or skeletal features in paleontology.

Serraties remains a niche term and is largely supplanted by serration in contemporary literature, but may be found in multilingual or historical contexts. See also serration, leaf margin, crenation, dentation.