The word "stipule" is spelled with five letters, starting with an "s" sound and ending with an "l" sound. The IPA phonetic transcription for this word is /ˈstɪpjuːl/. The "s" sound is represented by the phoneme /s/, followed by the "t" sound, represented by /t/. The third sound is an "i" sound represented by /ɪ/. The fourth sound is a "p" sound represented by /p/, and the fifth sound is an "l" sound represented by /l/. This word is often used in botany to describe a small leaf-like structure at the base of a plant's petiole.
A stipule refers to a small, leaf-like structure found at the base of a leafstalk (petiole) in many flowering plants. These formations are typically paired and are found one on each side of the leaf node, where the leaf is attached to the stem. Stipules are considered auxiliary structures that have various functions depending on the plant species.
Stipules can exhibit different shapes, sizes, and textures depending on the plant species. They can be small and inconspicuous, resembling tiny scales, or they can be large and prominent, resembling independent leaves. Stipules can be simple and undivided or compound and divided into leaflets. Additionally, stipules can be persistent, remaining attached to the stem even after the leaf has fallen, or they can be deciduous, falling off when the leaf reaches maturity.
The functions of stipules vary depending on the plant species. Some stipules are protective in nature, surrounding and safeguarding newly formed leaves as they emerge from the bud. Other stipules are modified and become specialized structures that serve specific purposes. For example, stipules can transform into tendrils, allowing plants to climb or latch onto nearby structures for support. Stipules can also bear glands or spines, aiding in defense against herbivores or deterring the growth of competing plants.
In summary, stipules are leaf-like structures found at the base of leafstalks (petioles) in many flowering plants. They can have diverse shapes, sizes, and textures, and their functions range from protective roles to specialized structures that aid in climbing, defense, or competition.
An appendage at the base of a leaf.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
In bot., a leaflet at the base of other leaves, having a lateral position, and more or less changed either in form or texture.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "stipule" originated from the Latin term "stipula", which means "straw" or "stalk". The Latin word for "stalk" was derived from "stipes", meaning "tree trunk" or "stock". As a botanical term, "stipule" refers to the small appendages found at the base of the leaves of certain plants, resembling small leaflets, glands, or spines. The etymology of "stipule" reflects its association with plant anatomy and morphology.