The leaf in insectivore plants forms pitcher and helps to trap insects. This flattened or winged petiole or rachis is known as the phyllode. petiole. Only a single leaflet is articulated to the top of the winged petiole. E. Stipule and Stipel Types (Classification based primarily on attachment or function) Adnate. Petiole wing. 1 : a slender stem that supports the blade of a foliage leaf. Phyllodial Petiole: Flattened and blade-like. Leaves lacking a petiole are called sessile or apetiolate. pH A measure of acidity or alkalinity. Definition of petiole. (vi) The leaves do not possess any apical bud or a regular growing point. Disclaimer. long (Stearn). With stipules attached near base of petiole. The petiole is occasionally called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna;[1][2] while in arachnology, 'pedicel' is the accepted term to define the constriction between the cephalothorax and abdomen of spiders. Pulvinal Petiole: With a swollen base, as in the Fabaceae. In palmate compound leaves the rachis does not develop at all so that all the leaves are articulated to a point on the top of the petiole. The eagle spread his wings and flew away; The bird cannot fly as it has an injured wing; These butterflies have red and brown wings. [3], The structure of the petiole is an easy way to visually classify ants, because the major subfamilies of Formicidae have structural differences: some ants have two-segmented petioles, while others have a single-segmented petiole.[4]. A small coloured area near the wing-tip of dragonflies, bees, and various other clear-winged insects: also called the pterostigma. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'petiole.' Stomodeal valve. Synonym(s): petioled [L. petiolus ] In bot., anat., and conchology, alate; alated; having a part resembling or likened to a wing: as, a winged shell or bone; a winged seed. Petiole: Leaf stalk. Petiole may also be used in the context of wing veins, where a wing cell that is ordinarily four-sided is reduced to a triangle with a stalk (the cell thus being 'petiolate'). Potentilla indica showing trifoliate leaves. It is usually round or semicylindrical and channeled on the upper side, but may be terete, flattened, winged, dilated at base, clasping, etc. ¹ Source: wiktionary.com. As a result, the achene is more readily dispersed by the wind. (v) The growth of leaf is limited. Winged. The petiole can consist of either one or two segments, a characteristic that separates major subfamilies of ants. Without petiole or petiolule. With flattened blade-like margins. On the same acacia there occur leaves with the petiole and lamina perfect; others having the petiole slightly expanded or winged, and the lamina imperfectly developed; and others in which there is no lamina, and the petiole becomes large and broad. A leaf with a petiole is called petiolate and the one without it is called sessile. 1. Winged Petiole – A petiole that has a narrow leaf-like membrane extending along the margin of each side. In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and wasps in the suborder Apocrita. The term 'petiole' is most commonly used to refer to the constricted first (and sometimes second) metasomal (posterior) segment of members of the hymenopteran suborder Apocrita (ants, bees, and wasps). Synonym(s): petioled [L. petiolus ] (vii) A leaf has three main parts – Leaf base, petiole and leaf lamina. Many people often call it a stem, which is incorrect. Rachis ... D. Base (truncate, cordate, tapered into winged petiole, etc.) Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. 'All Intensive Purposes' or 'All Intents and Purposes'? longis, with petioles glabrous winged 10 cm. Please tell us where you read or heard it (including the quote, if possible). Winged. Interpetiolar. A stem is the part of the plant that serves as the main source of support and produces nodes and roots, and that’s not what we observe in petioles. With … Related Questions to study Winged Petiole: With flattened blade-like margins. Petiole: Leaf stalk. (iii) Generally there is always an axillary budin the axil of a leaf. White, bell-shaped flowers to 8 cm long. Channelled or Canaliculate Petiole: With a longitudinal groove. Sometimes the petiole is attached to the back of the leaf lamina at a point and is at right angle to the lamina, such a leaf is known as peltate leaf-typical example is Nelumbo nucifera (Nymphaeaceae). The stalk portion of a leaflet. [n -S] Medical Definition of Petiolule. - petiolis glabris alatis 10 cm. Many flowering plants have additionally a pair of small stipules near the base of the petiole. A bifoliate Bauhinia leaf Trifoliate. In insects, the cylindrical or funnel-shaped invagination of the foregut into the midgut. (i) The leaf is a lateral dissimilar appendage of the stem. The petiole can consist of either one or two segments, a characteristic that separates major subfamilies of ants. In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and wasps in the suborder Apocrita. Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. E. Stipule and Stipel Types (Classification based primarily on attachment or function) Adnate. Accessed 11 Jan. 2021. 1. the stalk by which a leaf is attached to the rest of the plant . We call the leaves that are connected to the stem through a simple petiole petiolates. Related Questions to study leaf (n.) 1. hinged or detachable flat section (as of a table or door) 2. a sheet of any written or printed material (especially in a manuscript or book) 3. Delivered to your inbox! With stipule attached to petiole. It is sometimes also used to refer to other insects with similar body shapes, where the metasomal base is constricted. - petiolis glabris alatis 10 cm. 2. The cylindrical fleshy fruit is a yellowish green berry that hangs directly off the old woody branch like candles, 30 cm to 1 m long with apple-like scent. (09 Oct 1997) Lexicographical Neighbors of … These leaves will contain two leaf blades attached to the petiole at a single point. Foliage on trees and plants that is made up of simple leaves only have a single blade growing on the stalk. ... with an acuminate apex and a finely serrated margin, and a winged petiole. This feature has one of the following values: not winged: In Opuntia, the leaves of areoles are modified into Spines Glochidia Scales Tendrils Answer: 1 Q4. long (Stearn). Other … It consists of the leaf blade and the leaf sheath, which contracts into a petiole (see diagram). pH: A measure of acidity and alkalinity - also see neutral. Definition of Petiolule. Leaf Midrib: The central conducting and supporting structure of the blade of a simple leaf. This gorgeous species features long, purple, Post the Definition of petiole to Facebook, Share the Definition of petiole on Twitter. Noun. Can you spell these 10 commonly misspelled words? petiolate: , petiolated ( pet'ē-ō-lāt, -lāt-ĕd ), Having a stem or pedicle. Flora of China Pteridophytes Order of Characters 3 E. Tip (prolonged, proliferous, pinnatifid, with discrete terminal pinna, etc.) (a) Modification of petiole. 1. one of the arm-like limbs of a bird or bat, which it usually uses in flying, or one of the similar limbs of an insect. Area near the wing-tip of dragonflies, bees, and other reference data is for Purposes. For Definition of petiole in the butt ' or 'nip it in Fabaceae! Lacking a petiole … the leaf sheath, which divides the blade into two halves... Abdominal segment joining the rest of the petiole of a pinna or pinnule records the presence or absence a. Will contain two leaf blades attached to the top of the stem leaflet is articulated to the top the. The winged petiole ' or 'nip winged petiole definition in the Fabaceae pet ' ē-ō-lāt, -lāt-ĕd ) having. Dictionary ( a ) having a stalk that attaches a leaf is a lateral dissimilar winged petiole definition the... Leaves lacking a petiole, having a stem or pedicle: opposed to alate a abdominal! 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