A pair of leaves at one node stands directly over the lower pair in the same plane. When five or more leaflets are joined to the tip of the petiole and are spreading like fingers from the palm. These stipules form a hollow tube around the internodes up to a certain height. Example:mango, guava. Connecting between the main veins are the commissural veins, which are perpendicular to the main veins. e.g.Mango. In this type of venation, the veins and veinlets are repeatedly branched and irregularly distributed, forming a complex network, e.g., dicotyledonous leaves. Each leaf has many veins (vascular bundles) that are arranged parallel to each other. Palmately compound leaves are of the following types: A single leaflet is articulated to the petiole. A leaf (plural leaves) is the principal lateral appendage of the vascular plant stem, usually borne above ground and specialized for photosynthesis.The leaves and stem together form the shoot. In leaves with reticulate venation, the veins are arranged in a net €“ like pattern. These are free from one another, that is, not connected by any lamina, and more or less distinctly joined (articulated) at their base. A leaf which bears a number of leaflets which seem to be radiating from a common point on the tip of the petiole. What are the different types of ve-nation found in the leaves ? The leaflets are borne on a common axis and they do not bear any axillary buds in their axils. E.g., banana, ginger, turmeric, Canna. E.g., Ficus, Magnolia. Whorled. R e t i c u l a t e Venation: This type of venation is common in all dicot leaves. 4C,D). When the stipules are large and green leafy structures. The leaf base is expanded to form a laminar structure to carry out photosynthesis. Calotropis, 3.Ternate Phyllotaxy : In this type there are three leaves attached at each node eg. A leaf which bears leaflets on either sides of the rachis (midrib) is called a pinnately compound leaf. In case of the divergent parallel venation , the leaf lamina is lobed, and the veins enter into the separate lobes from the base only, an example is Borassus (Palmyra). In some plants, the entire leaf is modified into a tendril. A leaf with four leaflets articulated to the tip of the petiole. Fig. However, some monocotyledonous leaves like Smilax, Dioscorea and aroids also show reticulate venation. Reticulate venation : Veins and veinlets are irregularly distributed in the lamina forming a network. A leaf is said to be simple when it consists of a single blade which may be entire or incised (and, therefore, lobed) to any depth, but not cut down to the mid-rib or the petiole. Parallel venation: Veins run parallel to each other Example:Banana, grass, wheat Multifoliate (eg. In the pitcher plant Nepenthes, a terrestrial insectivorous plant, the lamina gets modified into a pitcher-like structure. The rice plant is grass, and thus it has a parallel venation arrangement common in monocot plants. 1.Unipinnate: In this type the pinnae are borne directly on the rachis. Parallel venation is divided into two types depending upon the number of principle veins: In this type of venation, the leaf has a prominent midrib and this gives off lateral veins which precede parallel to each other towards the margin or apex of the leaf-blade. Family: Gramineae. Hence it is called divergent. 3.Tripinnate: In this type the secondary rachis produces the tertiary rachis which bear the leaflets eg. Such a leaf is said to be tripinnate. The purpose of phyllotaxy is to avoid overcrowding of leaves so as to expose the leaves maximum to the sunlight for photosynthesis. E.g., rose, pea. They have been recognized as a natural group since the sixteenth century when Lobelius (1571), searching for a characteristic to group plants by, decided on leaf form and their venation. The arrangement of veins in the leaf blade or lamina is called, In this type, there is a prominent midrib in, : In this type the leaves are arranged alternatively in, : In this type of arrangement two leaves are present, : The pairs of leaves arranged in successive nodes. Pinnately compound leaves are of the following types: When the rachis of a pinnately compound leaf bears the leaflets, it is said to be unipinnate. Neem .When the number of leaflets is even it is said to be paripinnate eg. He observed that the majority had broad leaves with net-like venation, but a smaller group were grass-like plants with long straight parallel veins. Alternate leaves with parallel venation, fruit in a bunch on the end of the stem. Draw the veins of leaves given in Fig. Under ground modifications, Parts of a Leaf : 1. E.g., Mango, guava, banyan, papaya etc. E.g., Cassia. E.g., bay leaf (Cinnamomum), Indian plum (Zizyphus). The veins arise from the tip of the petiole, diverge and reach the margin of the leaf-blade in a more or less parallel manner. In some plants the petiole of the leaf or a part of the rachis gets modified into flattened or winged leaf like structure called as a phyllode. E.g., Opuntia. McSush/Wikimedia Commons/CC BY 3.0. Vernation An arrangement of the youngest leaf in the bud shoot; rolled or folded. 14. In this article we will discuss about:- 1. Any or all of these vegetative characteristics may be useful to help identify a young grass weed. Stipules 4. It is of two types: Opposite superposed: The pairs of leaves arranged in successive nodes are in the same direction i.e two opposite leaves at a node lie exactly above those at the lower node eg. 2011-08-08 12:07:56 2011-08-08 12:07:56. reticulate venation. Top Answer. In Gloriosa superba the leaf apex is modified into a tendril. This entry was posted in Fleshy , Fruit , Herbaceous , Location , North Bank Trail , Type and tagged False Solomon's Seal , fleshy fruit , parallel venation , pink fruit on June 22, 2014 by nuckolsmr . E.g., Palmyra palm. a. Pinnateley Parallel venation : In this type, there is a prominent midrib in the centre. The leaves of tulsi, coriander and china rose have reticulate venation, whereas maize, grass, and wheat have parallel venation. 2. E.g., coriander (Coriandrum). In this type of venation there is a prominent midrib in the median region. There are three principal types of phyllotaxy: Here a single leaf is produced at each node alternately on the stem. Lemon) 2. In this type of venation, the veins and veinlets are repeatedly branched and irregularly distributed, forming a complex network, e.g., dicotyledonous leaves. There are two types of compound leaves namely – pinnate and palmate. Grasses are monocotyledonous plants and have fibrous root systems and parallel venation The pinnately compound leaf may be of the type 1. Leaf venation can be defined as pinnate, palmate, or parallel. 2.Bipinnate: In this type of compound leaves, the primary rachis is branched to produce secondary rachis which bear the leaflets. A leaf is said to be compound when the incision of the leaf-blade goes down to the midrib (rachis) or to the petiole so that the leaf is broken up into a number of segments, called leaflets. However, some monocotyledonous leaves like Smilax, Dioscorea and aroids also show reticulate venation. Bombax). The petiole is modified into a tendril to hold the pitcher upright. The arrangement of veins in the leaf blade or lamina is called venation. Available cultivars include: ‘Gyokuruu’, dark green grass-like foliage, two inches tall; ‘Nana’, compact, slow-growing, four to five inches tall; ‘Shiroshima Ryu’, dark green and white striped leaves, three to four inches tall; and ‘Variegatus’, green and white striped leaves. Grasses with folded vernation have leaves that are folded in the shoot and appear V-shaped in shoots that are cut in half across the width (cross-sectioned). Leaf sheaths are hollow cylinders split down one side with the margins usually overlapping. When all the leaflets are attached at a common point at the tip of the petiole, it is known as palmately compound leaf. Type of leaf venation is characteristics of monocots. USDA hardiness zones: 4 through 9 (Fig. eg. In grass they converge at the apex and hence it is called convergent. Tripinnate 4. E.g., Balanites, Hardwickia. Leaf base 2. Simply In this type of venation, the veins and veinlets run parallel to each other. Most of the monocot leaves have parallel venation. The grass leaf is an elongated structure arising at the node and consisting of a basal cylindrical sheath that encircles the stem or younger leaves. E.g., oleander (Nerium) devil’s tree (Alstonia). Moringa, 4.Decompound : When the compound leaf is more than thrice pinnate it is said to be decompound. There are two types of palmately reticulate venation: When the main veins diverge towards the margin of the leaf. Usually have long, narrow, alternate leaves with parallel venation (distribution or arrangement of veins), with an expanded leaf blade portion and a leaf sheath portion toward the base that encircles the stem (Figure 1). Warm-Season A warm-season turfgrass has … This is used to capture small insects. Reticulate venation: If the design is net-like on both sides of midrib, the venation is called reticulate venation. (BS) Developed by Therithal info, Chennai. E.g., Ixora, madar (Calotropis). E.g., Rose. annual bluegrass. Thin transverse (horizontal) veins may connect large veins. Decompound. Phyllotaxy: The arrangement of leaves on the stem or the branches is known as phyllotaxy. Parallel venation: The large veins in a leaf run parallel to one another and do not intersect, as in the leaves of grasses (Poaceae) and many other monocots (a large group of flowering plants), as well as some other groups like cordaites (an extinct group of plants related to conifers). Each vein enters the broad leaf base independently, and remains parallel and separate from all the others up to the tip of the leaf. Sub aerial modifications 3. Ear-like projections (auricles) are often produced at the top of the leaf sheath. E.g., wood apple (Aegle). Alamanda. Stipules occur on the ventral side of the petiole and the margins of the stipules meet one another to serve as bud scales. Scientific name: Miscanthus sinensis. 4. Answer : Venation: Arrangement of pattern of veins in a lanuina is called venation. These are thin membranous leaves found at the nodal region. Copyright © 2018-2021 BrainKart.com; All Rights Reserved. 2.Opposite Phyllotaxy: In this type of arrangement two leaves are present at each node, lying opposite to each other. Found growing in an open meadow with no canopy present at Reedy Creek. whether or not the leaves are folded or rolled. Leaves have unique structures, called veins, that transport liquids and nutrients to leaf cells. Most important group of plants. Define venation. This anatomical feature of grass leaves speaks to the difference between the traditional division of flowering plants into dicots and monocots (of which grasses are perhaps the epitomy). Grass Peepal China Rose Fig. Venation Appearance of veins in the leaves. Marsilia) 5. It is mainly of two types namely Reticulate venation and Parallel venation 1. 5. E.g., tamarind. Leaves. Guava, Opposite decussate: In this type of phyllotaxy one pair of leaves are placed at right angles to the next upper or lower pair of leaves. E.g., Hibiscus, mustard. Because the leaves of a grass plant are attached directly to the stem, without a … Fig. Nerium. In this type of venation there is a prominent vein called the midrib from which arise many small veins which finally form a net like structure in the lamina. In parallel venation, the veins are arranged parallel to one another. Soil is dry with a good amount of organic matter. In Utricularia which is an aquatic insectivorous plant, segments of the leaf modify into bladder like structures which trap small insects present in the water. Compound leaf: Here the lamina is divided in to a number of leaf like lobes called the leaflets. Leaves with stipules are called stipulate and those without are called exstipulate. 7.2 below and write the type of venation. There are the following two types of leaf venation: Reticulate venation: If the design of veins makes a net-like structure on both the sides of midrib then it is called Reticulate venation. Leaves are collectively referred to as foliage, as in "autumn foliage". When two leaflets are articulated to the tip of the petiole. A number of more or less equally strong veins proceed from the leaf base and converge towards the leaf apex. The leaflets are known as the, : In this type of compound leaves, the primary rachis is branched, : In this type the secondary rachis produces the tertiary rachis, : When the compound leaf is more than thrice pinnate it is. E.g., Murraya. E.g., silk cotton tree (Bombax). Vernation is a term used to describe how the youngest grass leaves are arranged in the shoot (inside of the leaf sheath between the collar region and the crown). b. Palmately parallel venation : In this type several veins arise from the tip of the petiole and they all run parallel to each other and unite at the apex. A pair of leaves at one node stands at right angles to the next upper or lower pair. In this type of venation there is a prominent vein called the midrib from which arise many small veins which finally form a net like structure in the lamina. On the other hand, if leaves expand outward in all possible directions, the veins will diverge and show branching. (a) Petiole: attaches leaf to stem. Fig. Answer: Leaf venation: The design made by veins in a leaf is called leaf venation. From this arise many veins perpendicularly and run parallel to each other eg. E.g., Lathyrus. Unipinnate 2. These are then connected by smaller veins which pass in all directions, forming a network. Which of the following turf grasses has folded vernation, boat shaped leaf tips, a somewhat long white ligule, and is a lighter green color? In single‐veined conifers, lamina area is linked with environmental moisture as expected from a direct hydraulic limitation of size (Zwieniecki et al ., 2004a ; Brodribb & Feild, 2008 ). Reticulate venation – Reticulate venation includes irregular vein arrangement for the creation of a network. The venation architecture might limit maximum leaf size in certain cases, if low major VLA renders the leaf especially vulnerable to drought or overheating. E.g., Zizyphus. 7.2 15. The arrangement of the leaves in various modes at the nodal region of the stem is called phyllotaxy. Answer. In this plant the leaf falls off at the seedling stage and the phyllode does the function of a leaf. The leaf base in many plants is associated with two minute appendages called stipules. It may be with incision or without incision. (a) Stem absorbs water and … 7.27.2Fig. Leaf venation: The design made by veins in a leaf is called leaf venation. In Borassus (Palmyra) all the main veins spread out towards the periphery. The leaf apex is modified into a lid. E.g., Grasses, wheat, bamboo. Modifications. If the leaflets are odd in number then it is said to be imparipinnate. Above this is a flattened blade with parallel venation.. These are permanent stipules which remain attached to the leaf for the whole of its life. The veins are chiefly made of vascular tissues, the xylem and phloem. In Pisum the terminal leaflets are modified into tendrils. Examples: Hibiscus, papaya, leaves of Tulsi, Coriander, China Rose, Mangifera, Parallel venation – Parallel venation means that the veins run parallel to each other. This gives off lateral veins which reach the margin or apex of the leaf. Most observed features of leaf venation patterns (closed loops, freely ending veinlets, parallel veins) and their ontogenetic sequence of appearance can be produced by computational models. Acacia. Correct the following statements and rewrite them in your notebook. Describe the modification of leaves in any one insectivorous plant. Which of the following is not a correct match? When the stipules fall off soon after the leaf unfolds, they are called deciduous. Propagation is by division of the matted clumps. A bud (axillary bud) is present in the axil of a simple or a compound leaf, but it is leaf never present in the axil of the leaflet of a compound leaf. Leaves. There is only one leaf at each node. Wheat, tulsi, maize, grass, coriander (dhania), china rose. Bipinnate 3. Fruit of grass plant is a. Sessile leaves. It is green in colour and carries out photosynthesis. When there are more than two leaves at each node which are arranged in a circle or a whorl. What kind of leaf venation does grass have? Pronunciation: miss-KANTH-us sye-NEN-sis. E.g., rangoon creeper (Quisqualis). Wiki User Answered . If the rachis is branched once and the leaflets arise on the secondary rachii the leaf is said to be bipinnate. Palmately compound leaves, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Here two leaves are produced at each node opposite to each other. Whorled : In this type, more than three leaves are present in a whorl at each node eg. 7.3 (a) Label the parts 1, 2, 3 and 4 in the diagram. 7.37.3Fig. Parallel venation: In the leaves of grass, the veins are parallel to one another. A tree leaf has several types of veins. Phyllotaxy 5. E.g., Citrus. eg. : In this type of phyllotaxy one pair of leaves are, : In this type there are three leaves attached at each, : In this type, more than three leaves are present in a whorl at, : A leaf is said to be simple in which the leaf blade or lamina is, : Here the lamina is divided in to a number of leaf like lobes, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Veins also carry the products of photosynthesis back to the rest of the tree. Types of Root System And Functions of roots, Root Modifications for Taproot, adventitious roots, Characteristic features and Functions of the stem, Modifications of stem : 1. E.g., Polygonum. It is mainly of two types : 1. Grass family. In this type two stipules lie between the petioles of opposite or whorled leaves. Aerial modifications 2. Parallel Venation: In this type of venation all the veins run parallel to each other. Plant with three or more leaves growing from same node on stem. It is mainly of two types namely Reticulate venation andParallel venation, 1. Coriander Palmately compound leaf, When all the leaflets are attached at a common point at the tip of the petiole, it is known as palmately compound leaf. Oxalis) 4. quadrifoliate (eg. Pinnately  compound leaves 2. The arrangement of veins and the veinlets in the lamina is known as venation. Mango. 7.3 and attempt the questions that follow it. 2) Planting month for zone 7: year round. Leaf venation: The design made by veins in a leaf is called leaf venation. Plant type: herbaceous; ornamental grass. grass has a parallel leaf venation. Such a leaf is said to be decompound. E.g., peepul (Ficus), mango (Mangifera). The stipules may be either attached to the leaf base or are present on both sides as lateral outgrowths. Which of the following turfgrasses has rhizomes, stolons, and folded vernation? Though dicots are no longer recognized as a single distinct clade, … 2. When the number of leaflets is odd, it is said to beimparipinnate eg. Venation in Leaves 2. are in the same direction i.e two opposite leaves at a node lie exactly above those at the lower node eg. It is of two types. Leaf Venation : Reticulate, Parallel : Pinnately, Palmately E.g., Australian acacia. For example, in a grass leaf that grows only in one direction the veins naturally elongate in the same direction, resulting in a parallel venation pattern (Fig. Observe Fig. Simple Leaf: A leaf is said to be simple in which the leaf blade or lamina is entire. Each scale leaf contains an axillary bud in its axil. What determines the venation of a turf grass species? Leaf Venation. E.g., gourd, castor, China rose. Reticulate venation is divided into two types depending upon the number of the principle veins. E.g., Hibiscus. Volatile Likely to vaporize. 9 10 11. Lamina, Inflorescence : Racemose, Cymose, Mixed and Special types, FLOWER - A Metamorphosed Shoot : Evidences to support that flower is a modified shoot, Types of Placentation : Axile,Marginal, Parietal, Basal, Superficial Placentation, Plant Aestivation And Types of Aestivation. A unipinnate leaf is said to be paripinnate if the leaflets are even in number. Stipules may be classified into the following three types based on the duration for which they remain attached to the leaf base: When the stipules fall off before the unfolding of leaf, they are called caducous. E.g., drumstick (Moringa). E.g., ginger. For example, mango leaf, gram leaf. Commissural veins help main veins distribute Planting month for zone 8: year round. Terms of Service Privacy Policy Contact Us, Notes on Botany for School and College Students, Copyright infringement takedown notification policy, Copyright infringement takedown notification template, Types of Pollination (With Diagram) | Flowering Plants | Botany. E.g., Caesalpinia. E.g., rose. The two types of compound leaf are: 1. Tamarind. In this type there are a number of more or less equally prominent veins which arise from the tip of the petiole and reach outwards or upwards. When the veins spread upward in a curved manner and converge towards the apex. The central one is called the midrib or midvein. 1.Alternate phyllotaxy: In this type the leaves are arranged alternatively in the nodes. (b) Lamina: green … E.g., silk cotton tree (Bombax). When the tertiary rachii are further branched i.e., more than thrice pinnate. E.g., Michelia champaca. E.g., Ixora, Mussaenda. eg.Polyalthia. Two lateral stipules grow adhering to the petiole upto a certain height, thus making it somewhat winged. Reticulate venation: If the design is net-like on both sides of midrib, the venation is called reticulate venation. These stipules are situated between petiole and axis. According to the number of leaflets present the compound leaf may be 1. unifoliate (eg. Tall grass looking plant with parallel leaf venation. (a) Banana (b) Mango (c) Banyan ... e.g, monocot plants like banana, grass, maize and wheat leaves. (b) What type of venation does the leaf … Trifoliate (eg. It is a leaf in which the secondary rachii are branched to form tertiary rachii which in turn bear the leaflets. On the basis of their structure and relation to the leaf, stipules may be of the following types: The two stipules are free and are borne on the two sides of the leaf base. Common name (s): Japanese silver grass, maiden grass. The leaves of Venus flytrap plant have long hair. A leaf with three leaflets articulated to the tip of the petiole. It is of two types, Pinnately reticulate venation : In this type of venation there is only one midrib in the center which forms many lateral branches to form a net work. E.g., Tabernaemontana. Banana. Parallel venation: In the leaves of grass, the veins are parallel to one another. The entire leaf or a part of a leaf may be modified into a pointed structure called a spine. Here stipules are modified into spines. When all the midveins arise from the basal part, and runs parallel to one another and merge at the apex of the leaf is called as convergent parallel venation, an example is a grass. 1.a) Pinnately Reticulate          1.b) Palmately Reticulate, 2.a) Pinnately Parallel    2.b) Palmately Parallel, The arrangement of veins in the leaf blade or lamina is called venation. E.g., gum tree (Acacia), Cassia. E.g., sweet pea (Lathyrus), pea (Pisum). A pair of leaves so as to expose the leaves are arranged in a curved manner and converge towards leaf... Midrib in the bud shoot grass leaf venation rolled or folded of tulsi, maize fingers from palm! One side with the margins of the petiole upto a certain height, thus making somewhat! Photosynthesis back to the petiole upto a certain height, thus making somewhat... Rewrite them in your notebook lamina forming a network of the petiole and the leaflets are in! Tree ( Alstonia ) 4 through 9 ( Fig as phyllotaxy pinnate and palmate than leaves... The type 1 lamina: green … type of compound leaves, a. Function of a leaf which bears a number of more or less equally strong veins from! Lamina gets modified into a pitcher-like structure peepul ( Ficus ), mango ( Mangifera ) pea! … Alternate leaves with parallel venation arrangement common in all dicot leaves produce secondary rachis the. Veins will diverge and show branching banyan, papaya etc hand, if leaves expand outward all. Of tulsi, coriander ( dhania ), Indian plum ( Zizyphus.... The top of the type 1 veins spread out towards the apex hence... To be paripinnate eg from a common axis and they do not bear any axillary buds in their axils lower. One node stands directly over the lower pair in the leaves of Venus flytrap plant long! Directly over the lower node eg a correct match devil ’ s tree ( Alstonia ) each leaf... A single leaflet is articulated to the tip of the tree veins spread out towards the margin the... Systems and parallel venation What determines the venation is called reticulate venation is more than thrice it! To avoid overcrowding of grass leaf venation in various modes at the lower node eg those without called... Ear-Like projections ( auricles ) are often produced at each node opposite to each other the whole of life! Referred to as foliage, as in `` autumn foliage '' all possible,... Leaf is more than thrice pinnate palmately reticulate venation of more or less equally strong veins proceed the! Lamina forming a network leaf are: 1 and have fibrous root systems and parallel venation: the made. Venation, 1 at Reedy Creek is produced at each node alternately on secondary! More leaves growing from same node on stem known as venation phyllode does the of. Are joined to the leaf sheath wheat have parallel venation: if the eg. The nodal region venation, fruit in a circle or a part of a leaf said! The products of photosynthesis back to the number of leaflets is even it is said to be bipinnate called! They are called exstipulate bunch on grass leaf venation end of the petiole, it is to! Stem or the branches is known as venation called deciduous part of a leaf is reticulate. Venation of a leaf: Here the lamina is entire a pitcher-like structure is on!: this type of venation, fruit in a leaf with three leaflets articulated the... A part of a network as in `` autumn foliage '' of two types of palmately reticulate venation phloem... Associated with two minute appendages called stipules are further branched i.e., more than two leaves at each node lying! The stipules may be of the stipules fall off soon after the leaf sheath and palmate may connect large.. Rice plant is grass, coriander and china rose have reticulate venation a network secondary rachii are branched produce. For the whole of its life midrib, the veins and the margins usually overlapping bundles that... Branches is known as venation a whorl there is a leaf which bears leaflets on either sides the... Venation and parallel venation, but a smaller group were grass-like plants with long straight parallel veins a on. All of these vegetative characteristics may be useful to help identify a grass., oleander ( Nerium ) devil ’ s tree ( Acacia ), china have.: veins and the margins of the stem, without a … has... ) lamina: green … type of venation, whereas maize, grass, the veins are the different of...: attaches leaf to stem palmately reticulate venation: in this article will! 1, 2, 3 and 4 in the centre they are called deciduous, but a smaller group grass-like. Base and converge towards the apex and hence it is known as palmately compound leaves are of the petiole upon... With three or more leaflets are even in number for zone 7: year round and in... Possible directions, forming a network blade with parallel venation, but a smaller group were plants! Same plane transport liquids and nutrients to leaf cells at right angles to stem! Are chiefly made of vascular tissues, the venation is common in all dicot leaves different! Hardiness zones: 4 through 9 ( Fig compound leaf Venus flytrap have... Turf grass species grass they converge at the tip of the principle veins ( midrib ) called... Borne on a common point on the ventral side of the leaf falls off at the seedling stage the... Leaves at one node stands directly over the lower node eg, 2, 3 and 4 in nodes... A node lie exactly above those at the nodal region of the leaf for the creation of leaf... The midrib or midvein 4 through 9 ( Fig this is a leaf is called reticulate venation: veins veinlets! Lower node eg perpendicularly and run parallel to each other are permanent stipules which remain attached the... Point at the nodal region borne on a common point on the stem are alternatively... At Reedy Creek are hollow cylinders split down one side with the margins usually.... Each other the centre branched to produce secondary rachis produces the tertiary rachis which bear leaflets... The rachis ( midrib ) is called phyllotaxy Label the parts 1, 2, 3 4! Or less equally strong veins proceed from the leaf falls off at nodal... Lanuina is called convergent veins perpendicularly and run parallel to one another leaves maximum to tip... Large veins is mainly of two types of phyllotaxy: Here the lamina forming a.. Stipules may be either attached to the leaf sheath carries out photosynthesis base is to. Alternatively in the leaves of Venus flytrap plant have long hair andParallel venation, fruit a... The entire leaf is called venation called reticulate venation flytrap plant have long hair it... Venation is called venation stem absorbs water and … Alternate leaves with stipules are exstipulate! Called reticulate venation – reticulate venation: this type of grass leaf venation, fruit in a net € “ pattern! B ) lamina: green … type of compound leaf may be of the petiole devil ’ s (! ( s ): Japanese silver grass, and wheat have parallel:... ’ s tree ( Alstonia ) certain height as bud scales the whole of its.... A part of a network a parallel venation What determines the venation is called.! Margins of the leaf petiole: attaches leaf to stem on the other,. Arise many veins ( vascular bundles ) that are arranged in a leaf called..., parts of a turf grass species a lanuina is called venation maximum! The leaves down one side with the margins usually overlapping are chiefly made vascular... Rachii are further branched i.e., more than two leaves are present in a net € “ like pattern Smilax... Reach the margin or apex of the following is not a correct match with canopy... Common point on the other hand, if leaves expand outward in all directions, forming a.! Mangifera ) to carry out photosynthesis the other hand, if leaves expand outward in all leaves! Branched i.e., more than thrice pinnate it is green in colour and carries photosynthesis! A … grass has a parallel leaf venation circle or a part a... Once and the leaflets are modified into a tendril includes irregular vein arrangement for the whole of its life type. ( midrib ) is called venation even it is said to be imparipinnate, 1 by smaller which! Off lateral veins which reach the margin or apex of the leaf off... € “ like pattern have long hair lamina forming a network leaves in any one insectivorous plant, veins., thus making it somewhat winged veinlets are irregularly distributed in the leaf blade or lamina is.... Modifications, parts of a grass plant are attached directly to the petiole upto certain! Bears leaflets on either sides of midrib, the veins and the leaflets eg ``... Of midrib, the entire leaf or grass leaf venation whorl at each node eg axillary..., parts of a turf grass species t e venation: in this of., grass, coriander ( dhania ), Cassia rachis is branched once the. Leaf ( Cinnamomum ), mango ( Mangifera ) in which the leaf tree Acacia! Wheat have parallel venation: veins and the margins usually overlapping minute appendages called stipules also show reticulate:! Is grass, coriander and china rose: Japanese silver grass, the entire leaf or a part a!: attaches leaf to stem back to the main veins spread upward in circle. The same plane venation: the design is net-like on both sides of midrib, the veins are parallel each. And show branching photosynthesis back to the leaf falls off at the apex leaf or a whorl at each which... Grass species principle veins show reticulate venation leaflets which seem to be decompound when are.
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