The typical example is globe thistle (Echinops). Racemose Inflorescence: In this type of inflorescence the main axis does not end in a flower, but it grows continuously and develops flowers on its lateral sides in acropetal succession (i.e., the lower or outer flowers are older than the upper or inner ones). Cymose Inflorescence: Inflorescence: Type # 3. They are arranged along a spike inflorescence. In this type of inflorescence the growth of the main axis is ceased by the development of a flower at its apex, and the lateral axis which develops the terminal flower also culminates in a flower and its growth is also ceased. After reading this article you will learn about: 1. Holy basil, (Ocimum tenuiflorum), also called tulsi or tulasi, flowering plant of the mint family (Lamiaceae) grown for its aromatic leaves. Taxonomy: It is a natural hybrid formed by a cross of Ocimum americanum with O. basilicum. Content Guidelines 2. Taxonomy: It is a natural hybrid formed by a cross of Ocimum americanum with O. basilicum. Cultivation: This hybrid is best grown in containers. In this type of inflorescence the peduncle bears a terminal flower and stops growing. The oldest flowers develop in the centre and youngest towards the periphery of the disc, such arrangement is known as centrifugal. ), etc. White flowers, in tube, are grouped at the base of the leaves. Species grow where mean rainfall is in the range 1000 mm to 1600 mm (but a wider range of 600-4000 mm can be tolerated). Ocimum brachiatum Blume . Mixed Inflorescence: In this case two or more types of inflorescence get mixed up to form a mixed … For example, a double raceme is a raceme in which the single flowers are replaced by other simple racemes; the same structure can be … It is the genus of basil and the name is from the Ancient Greek word for basil, ὤκιμον (ṓkimon). One whole inflorescence continuously blooms for 6 to 8 weeks. It consists of inflorescence axis and mother axis. Peduncles are of two types- receptacle and scape. Racemose and Cymose Inflorescence | Botany, Inflorescence: Types and Special Types (With Diagram), Diversity in Modifications of Stems | Botany. It may be terminal or axillary in position. Fruits: Fruits are composed of tiny, 1-seeded nutlets. The former whorl of bracts is called involucre and the latter involucel. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Welcome to BiologyDiscussion! Therefore, the correct answer is option C. In the former case it becomes a compound raceme and in the latter case it becomes a compound cymose inflorescence. In this type of inflorescence the receptacle forms a hollow cavity with an apical opening guarded by scales. The capitulum inflorescence has been considered to be the most perfect. In fact two types of plants are known for this species: one with green leaves and stem is Sri Tulsi and one with purple leaves and stems as Krishna Tulsi. Each spikelet may bear one to several flowers (florets) attached to a central stalk known as rachilla. Here the main axis ends in a flower and it produces only one lateral branch at a time ending in a flower. and Siemonsma, J.S. ... Example- Ocimum, salvia. The various forms of racemose inflorescence may be described under three heads. Ocimum, Salvia; Cyathium: involucre of bracts form cup shape structure, single female flower is … Spikeletes are arranged in a spike inflorescence which is composed of several to many spikelets which are combined in various manners on a main axis called the rachis. Peduncles are of two types- receptacle and scape. Inflorescence size: Phenylpropanoids (37.7 % for the inflorescence vs. 58.3 % for the leaves) were the predominant class of oil constituents, Answer. Racemose inflorescence. In this type of inflorescence the main axis does not end in a flower, but it grows continuously and develops flowers on its lateral sides in acropetal succession (i.e., the lower or outer flowers are older than the upper or inner ones). In this plant the heads are small and one-flowered and are arranged together forming a big compound head. ... becoming minutely pubescent on the inflorescence axis, usually with young shoots in the axils of the leaves It is the mode of arrangement of flower in a group in a specialized branch called peduncle. The genus Ocimum L. is a member of the Labiatae family, collectively called basil (Fig. (i) With the main axis elongated, i.e., (a) raceme; (b) spike; (c) spikelets; (d) catkin and (e) spadix. This type has already been described under sub-head spikelets. Inflorescence type and habit: Terminal inflorescence, the cymes structure is thyrse. Flowers: flowers are borne on terminal verticle, 5-7 mm in length . The stalk of the individual flower of the inflorescence is called the pedicel. The palea (also known as superior palea) often with two longitudinal ridges (keels or nerves), stands between the lemma and the rachilla. These are: Hypanthodium: The main axis forms a cup-shaped structure with a cavity having both male and female flowers and a small... Cyathium: Here the cup-shaped structure is formed from involucre of bracts. Name the types of nitrogenous bases present in the RNA. Out of nine genotypes O. gratissimum (Ajowan and Rum tulsi), O. tenuiflorum (Krishna and Radha tulsi) and O. kilimandscharicum showed branched inflorescence and rest of the species showed unbranched or simple type of inflorescence. Habitat and Distribution > Distribution > Description ... Ocimum americanum var. Mixed Inflorescence. Here the peduncle (main axis) is short and bears many branches which arise in an umbellate cluster. Botanical name : Ocimum sanctum Family : Lamiaceae Vernacular names : Hindi, Gujarati, Bengali : Tulsi Marathi : Tulasa Tamil : Thulasi Telugu : Tulasi Malayalam : Trittavu Ocimum sanctum is a 30-75 cm high erect herb which is grown practically in every part of India. Also known as spike of spikelets. Each male flower is reduced to a solitary stalked stamen. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. In this type of racemose inflorescence the main axis remains elongated and the lower flowers are older, i.e., opening earlier than the upper ones, as found in raceme, but here the flowers are sessile, i.e., without pedicel or stalk, e.g., amaranth (Amaranthus spp. Besides, there is also a special type of inflorescence which fits into none of these groups. This inflorescence is found only in monocotyledonous plants. Pink or white flowers are tubular and 2-lipped. Ocimum / ˈ ɒ s ɪ m ə m / is a genus of aromatic annual and perennial herbs and shrubs in the family Lamiaceae, native to the tropical and warm temperate regions of all 6 inhabited continents, with the greatest number of species in Africa. Welcome to the India Biodiversity Portal - A repository of information designed to harness and disseminate collective intelligence on the biodiversity of the Indian subcontinent. The type of inflorescence is characteristic of Lamiaceae (Labiatae) family. Mixed Inflorescence: In this category of inflorescence, the axis begins as a racemose inflorescence and exhibits branching in a cymose fashion. In this type of inflorescence, florets may be unisexual, bisexual and sterile. It is the genus of basil and the name is from the Ancient Greek word for basil, ὤκιμον (ṓkimon). © 2019 Flora Fauna Web. Flowers: The flower is bisexual, actinomorphic, hypogynous to slightly perigynous and bracteate. Here the flowers are borne on the inner wall of the cavity. 1999. The whole inflorescence looks like an umbel, but is readily distinguished from the latter by the opening of the middle flower first, e.g., Ak (Calotropis procera), Hamelia patens, etc. The name basil comes from the Greek basilikos, meaning royal. The whole branched structure remains covered by a single spathe. Leaves are broadly elliptical with a slightly toothed leaf margin (1.5-6 cm long, 1-2.5 cm wide). each node of the inflorescence with 2 flowers and upper calyx lobes broad-triangular, not wing-margined (vs. O. basilicum, with each node of the inflorescence with 4 or more flowers and upper calyx lobe suborbicular, with winged margins that are decurrent on the calyx tube). Spices. In this inflorescence the primary axis remains comparatively short, and it bears at its tip a group of flowers which possess pedicels or stalks of more or less equal lengths so that the flowers are seen to spread out from a common point. Tulasi or Ocimum Sanctum belongs to family Lamiaceae and its flowers are tiny, purple and inflorescence is a verticillaster and forms a spike that is 12-14 cm in length. Ocimum sanctum, Ocimum tomentosum: Common Name: Holy Basil, Sacred Basil, 圣罗勒 ... Inflorescence Type Remarks: Racemose: Fruit, Seed and Spore. The typical examples are found in Poaceae (Gramineae) family such as-wheat, barley, sorghum, oats, etc. Privacy Policy3. Here the main axis (peduncle) remains branched in a racemose manner and each branch bears sessile and unisexual flowers. This type of work is extremely important in order to develop the full economic and medicinal potential of plant species. The florets are arranged in a centripetal manner on the receptacle, i.e., the outer flowers are older and open earlier than the inner ones. Types of inflorescence are - racemose, cymose, special types of inflorescence and mixed inflorescence. It is of two types; viz. This is also known as true cyme or compound dichasium. This type of work is extremely important in order to develop the full economic and medicinal potential of plant species. Verticillaster 6. Synonym. Usually a whorl of leafy bracts is found at the base of branches and also at the bases of flowers arranged in umbellate way. The cymose inflorescence may be of four main types: (iii) Multiparous or polychasial cyme and. Basil is one of the most popular and useful culinary and the main utilization forms of different basil types are fresh basil, frozen, dried, essential oil, and medicinal uses (Putievsky and Galambosi, 1999). (iii) With the main axis flattened, i.e., capitulum or head. The flowers are unisexual; the female flowers develop at the base of the cavity and the male flowers towards the apical pore. When the main axis of raceme is branched and the lateral branches bear the flowers, the inflorescence is known as compound raceme or panicle, e.g., neem (Azadirachta indica), gul-mohar (Delonix regia), etc. J. Serb. Holy basil is native to the Indian subcontinent and … This inflorescence is surrounded by one or more involucre. Species in the genus Ocimum grow in both seasonal dry and moist habitats with temperatures ranging from 18°C to 27°C (but species can tolerate 7-36°C). This type of inflorescence is found in genus Euphorbia of family Euphorbiaceae; also found in genus Pedilanthus of the family. Just above the glumes, there is series of florets, partly enclosed by them. The lemma is the lower, outer bract of the floret. It is evident that each stamen is a single male flower from the facts that it is articulated to a stalk and that it possesses a scaly bract at the base. Here the main axis (peduncle) branches in a corymbose manner and each branch bears flowers arranged in corymbs. Inflorescence of Flower. This type of inflorescence is a condensed form of dichasial (biparous) cyme with a cluster of sessile or sub-sessile flowers in the axil of a leaf, forming a false whorl of flowers at the node. This is a very simple type of inflorescence. The first of main floral axis gives rise to two lateral branches and these branches and the succeeding branches bear only one branch each on alternate sides. The flowers (florets) are usually of two kinds: (i) Ray florets (marginal strap-shaped flowers) and. Example: Ocimum, Salvia etc. There are three flowers; the oldest one is in the centre. This type of opening of flowers is known as centrifugal. integrifolium Engl. Thus within var. Zinnia, Cosmos, Tridax, Vernonia, etc. Inflorescence type and habit: Terminal inflorescence, the cymes structure is thyrse. Stem pilosity Dense hairy . What is its function? This is a modified spike with a long and drooping axis bearing unisexual flowers, e.g., mulberry (Moras alba), birch (Betula spp. The fruit is composed of 4 tiny, one-seeded nutlets. Also known as head of heads or capitulum of capitula. At the same time the peduncle produces two lateral younger flowers or two lateral branches each of which terminates in a flower. (ii) With the main axis shortened, i.e., (i) corymb and (ii) umbel. A capitulum or head is characteristic of Asteraceae (Compositae) family, e.g., sunflower (Helianthus annuus), marigold (Tagetes indica), safflower (Carthamus tinctorius). ... Example- Ocimum, salvia. Racemose inflorescence. de Guzman, C.C. toothed or lobed. This inflorescence (umbel) is characteristic of Apiaceae (Umbelliferae) family. In addition the whole inflorescence remains surrounded by a series of bracts arranged in two or three whorls. Also known as umbel of umbels. The inflorescences do not show any of the development pattern types are classified under special type of inflorescence. Simple Inflorescence A simple inflorescence maybe racemose or cymose according to the mode of branching. The involucre encloses a single female flower, represented by a pistil, in the centre, situated on a long stalk. Compound Inflorescence: The best answers are voted up and rise to the top. What is the significance of transpiration? The leaf surface is pubescent (densely covered in short hairs). Flowers are sessile and appear in a false whorl or vertically around the stem. Ocimum / ˈ ɒ s ɪ m ə m / is a genus of aromatic annual and perennial herbs and shrubs in the family Lamiaceae, native to the tropical and warm temperate regions of all 6 inhabited continents, with the greatest number of species in Africa. The examples are common in Palmaceae (Palmae) family. 16.1 a). The flowers may be pedicellate (stalked) or sessile (without stalk). Each flower arises in the axil of a bract eg. The axis shows unlimited growth. each node of the inflorescence with 2 flowers and upper calyx lobes broad-triangular, not wing -margined (vs. O. basilicum, with each node of the inflorescence with 4 or more flowers and upper calyx lobe suborbicular, with winged margins that are decurrent on the calyx tube). Inflorescence: Raceme type..there are more than 3 numbers of flowers. The flowers make a globose head, which is also called glomerule. Quantity of flowers: About 18 blooming spikes per plant with 4 open flowers in each spike. The floral parts borne in the axil of lemma. In this inflorescence there is a cup-shaped involucre, often provided with nectar secreting glands. Simple Inflorescence A simple inflorescence maybe racemose or cymose according to the mode of branching. This type of inflorescence is found in Acacia, Mimosa and Albizzia. Each cluster is a dichasial cyme reduced to two scorpioid. It consists of two clusters that develop from each of the two opposite axils of the leaves. Flower longevity on plant: About 4 days from mature bud to fade flower. It is most advanced type of inflorescence, because all flowers are pollinated at same time. They are adapted to different soil types with pH in the range 5.6-7.5. Mature Fruit Colour(s) - Angiosperms and Gymnosperms: Brown: Fruit Classification: Simple Fruit: Fruit Type 1: Indehiscent Dry Fruit: Fruit Type … Ocimum canum var. Special Inflorescence . Two varieties based on the types of O. gratissimum and either O. urticifolium or O. trichodon could be recognised as there are large morphological differences between the extremes of this continuum. Life form Broadleaf plant . Here the flowers develop in basipetal succession, i.e., the terminal flower is the oldest and the lateral ones younger. Typical examples, are—Ocimum, Coleus, Mentha, Leucas, etc. Fruits: Fruits are composed of tiny, 1-seeded nutlets. In this inflorescence the main axis remains comparatively short and the lower flowers possess much longer stalks or pedicels than the upper ones so that all the flowers are brought more or less to the same level, e.g., in candytuft (Iberis amara). Where are the pollen grains formed in the flower? Compound 4. ), latjira (Achyranthes aspera), etc. One whole inflorescence continuously blooms for 6 to 8 weeks. Share Your PDF File It is the mode of arrangement of flower in a group in a specialized branch called peduncle. In this type of cymose inflorescence the main axis culminates in a flower, and at the same time it again produces a number of lateral flowers around. Spikeletes are characteristic of Poaceae (Gramineae) or Grass family, e.g., grasses, wheat, barley, oats, sorghum, sugarcane, bamboo, etc. An inflorescence may be; simple, compound or of special types according to the mode of branching. Two varieties based on the types of O. gratissimum and either O. urticifolium or O. trichodon could be recognised as there are large morphological differences between the extremes of this continuum. Verticillaster: This type of inflorescence is found in Labiate family. The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. Species record last updated on: 20 April 2020. Calyx: They have 5 sepals. Hypanthodium. (With Methods)| Industrial Microbiology, How is Cheese Made Step by Step: Principles, Production and Process, Enzyme Production and Purification: Extraction & Separation Methods | Industrial Microbiology, Fermentation of Olives: Process, Control, Problems, Abnormalities and Developments. White to cream-coloured flowers are tubular and 2-lipped. Inflorescence of Flower. Stem hair type Pubescent . Leiden, the Netherlands: Backhuys Publishers. Flower longevity on plant: About 4 days from mature bud to fade flower. There are … Different types of inflorescence that are observed are – 1. Inflorescence: Type 1. Ocimum canum Sims . Flowers and glumes are arranged on the spikelet in two opposite rows. Inflorescence is the reproductive shoot, bearing a number of flowers. Here, one inflorescence consisting of two clusters develops from each of the two opposite axils of the leaves. In such cases the peduncle is reduced or condensed to a circular disc. Usually the lemma also known as inferior palea bears a long awn as an extension of the mid-rib at the apex or back. Inflorescence type Glomerulate . Sometimes, in monocha­sial or uniparous cyme successive axes may be at first curved or zig-zag (as in scorpioid cyme) but later on it becomes straight due to rapid growth, thus forming a central or pseudoaxis. It has both female and male parts. In this type of inflorescence the main axis (peduncle) branches repeatedly once or twice in racemose or cymose manner. At the same time there is a considerable saving of material in the construction of the corolla and other floral parts. Inflorescence: It is spike like or head or umbel. The individual flowers (florets) are bracteate. Soc. Plant Resources of South-East Asia No 13. Cyathium: Cyathium inflorescence consists of small unisexual flowers enclosed by a common involucre which mimics a single flower. Inflorescence: Type # 1. Male flowers are organised in a scorpioid manner. Each such branch bears a group of flowers in an umbellate manner. The main types of compound inflorescence are as follows: In this case the raceme is branched, and the branches bear flowers in a racemose manner, e.g., Delonix regia, Azadirachta indica, Clematis buchaniana, Cassia fistula, etc. Different types of inflorescence that are observed are – 1. An inflorescence may be; simple, compound or of special types according to the mode of branching. Cymose Inflorescence 3. It consists of inflorescence axis and mother axis. The usual structure of spikelet is as— There is a pair of sterile glumes at the base of spikelet, the lower, outer glume called the first, and the upper, inner one called the second. Perennial up to 0.6 m tall with some woody tissue at the stem bases. Types of inflorescence … The examples are found in genus Ficus of Moraceae family, e.g., Ficus carica, F. glomerata, F. benghal- ensis, F. religiosa, etc. Racemose Inflorescence: Inflorescence: Type # 2. Out of nine genotypes O. gratissimum (Ajowan and Rum tulsi), O. tenuiflorum (Krishna and Radha tulsi) and O. kilimandscharicum showed branched inflorescence and rest of the species showed unbranched or simple type of inflorescence. Synonym. sacred basil (Ocimum sanctum). gratissimum inflorescence structure and stem, leaf and calyx indumentum form a continuum of variation. Each cluster is a dichasial cyme. Types of cymose inflorescence: monochasial cyme, dichasial cyme, etc. All Rights Reserved. Sometimes, the umbel is un-branched and known as simple umbel, e.g., Brahmi (Centella asiatica). racemose and cymose. Some are in compound spikes (i.e., in wheat—Triticum aestivum), others are in racemes (e.g., in Festuca), while some are in panicles (e.g., in Avena). In this case many small heads form a large head. Generally the umbel is branched and is known as umbel of umbels (compound umbel), and the branches bear flowers, e.g., in coriander (Coriandrum sativum), fennel, carrot, etc. Compound Raceme or Panicle . Small clusters of 3 flowers are arranged in pairs along a spike-like, racemose inflorescence (8-10 cm long). The main axis of the inflorescence together with the latest axes, if present, is termed as the peduncle. It bears sessile or sub-sessile flowers on it. Share Your Word File Our mission is to provide an online platform to help students to share notes in Biology. Leaves are arranged in pairs with adjacent pairs perpendicular to one another. Thus within var. E.g. Special types of Inflorescence. The following points highlight the six major types of inflorescence. Fruit : Nutlets 4, ellipsoid, smooth, brown metted with minute yellow and black spots, covered with short fringe of hygroscopic mucilaginous hairs. Corolla: They have 5 … The reasons are as follows: The individual flowers are quite small and massed together in heads, and therefore, they add to greater conspicuousness to attract the insects and flies for pollination. IV. Also known as corymb of corymbs. ... becoming minutely pubescent on the inflorescence axis, usually with young shoots in the axils of the leaves White to cream-coloured flowers are tubular and 2-lipped. Sometimes branched, at times entire, inflorescence purple. Share Your PPT File. Chem. Botanical Name : Ocimum tenuiflorum L. Synonyms : Ocimum sanctum L. Common Name : Tulsi, Holy Basil, Vishnupriya Plant Family : Lamiaceae (Labiatae) According to the Rules of ICBN the names of the families should end in -aceae.Thus the new name for the family Labiatae became Lamiaceae. When the lateral branches develop on alternate sides, forming a zigzag, the cymose inflorescence is known as scorpioid or alternate-sided cyme, e.g., in Gossypium (cotton), Drosera (sundew), Heliotropium, Freesia, etc. The examples can be seen in poinsettia (Euphorbia), Pedilanthus, etc. Besides, it is also found in Acacia and sensitive plant (Mimosa pudica) of Mimosaceae family. Ocimum basilicum L. were analyzed by GC/EI-MS. Fifty components were identified in the inflorescence and leaf essential oils of the basil plants, accounting for 98.8 % and 99.9 % of the total quantified components respectively. Ocimum americanum is a small erect plant, with a strong aromatic smell. The lower or older flowers possess longer stalks than the upper or younger ones, e.g., radish (Raphanus sativus), mustard (Brassica campestris), etc. Inflorescence The arrangement of flowers on floral axis or peduncle resulting in formation of groups is called inflorescence. Racemose Inflorescence: In this type of inflorescence the main axis does not end in a flower, but it … The capitulum (head) may also consist of only one kind of florets, e.g., only tubular florets in Ageratum or only ray or strap-shaped florets in Sonchus. Synonym. Cultivation: This hybrid is best grown in containers. ), oak (Quercus spp. Verticillaster: sessile flowers arranged in dichasial cyme, e.g. … A kind of compound inflorescence is the double inflorescence, in which the basic structure is repeated in the place of single florets. gratissimum inflorescence structure and stem, leaf and calyx indumentum form a continuum of variation. Flowers attracts Small Mason bees and Sweat bees, pollens. Inflorescence size: Typical examples of compound umbel are—Daucus carota (carrot), Foeniculum vulgare (fennel), Coriandrum sativum (coriander), etc. Calyx: There are 5 calyx and it is greenish in color. Floral Bracts: The bracts are caudiform in shape and numerous in number. What are the general characters of bryophytes? Spike . It has an erect growth form which is highly branched. Each floret has at its base a lemma and palea. Which organelle is known as “power house” of the cell? It has simple, opposite and decussate leaves, along a square stem, lanceolate oval in shape. Disclaimer Copyright, Share Your Knowledge Inflorescence The arrangement of flowers on floral axis or peduncle resulting in formation of groups is called inflorescence. A special type of cymose inflorescence. Answer Now and help others. This is also a modification of spike inflorescence having a fleshy axis, which remains enclosed by one or more large, often brightly coloured bracts, the spathes, e.g., in members of Araceae, Musaceae and Palmaceae. Flowers in axillary and terminal racemes of compact whorls, floral axis as long as calyx slender, simple. Variation was also observed in inflorescence type. Angiosperms (Flowering Seed Plants) (Dicotyledon), Tropical & Subtropical Asia to north Australia. This type of inflorescence is known as sympodial cyme as found in some members of Solanaceae (e.g., Solanum nigrum). Crushed leaves emit a musky, slightly minty fragrance. Numerous pedicellate flowers are arranged from base to apex in acropetal succession. The oldest flower is in the centre and ends the main floral axis (peduncle). 1. Also known as spadix of spadices. 75 (10) 1361–1368 (2010) UDC 635.71:581.46:665.5/.54 JSCS–4058 Original scientific paper 1361 Inflorescence and leaves essential oil composition of hydroponically grown Ocimum basilicum L. MOHAMMAD BAGHER HASSANPOURAGHDAM1*, GHOLAM REZA GOHARI2, SEIED JALAL TABATABAEI2 and MOHAMMAD REZA DADPOUR2 1Department of Horticultural Sciences, … This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Crotolaria retusa, Cleome viscosa. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? Typical example-cauliflower. It is rarely racemose or globose umbel. Quantity of flowers: About 18 blooming spikes per plant with 4 open flowers in each spike. Mature Fruit Colour(s) - Angiosperms and Gymnosperms: Brown: Fruit Classification: Simple Fruit: Fruit Type 1: Indehiscent Dry Fruit: Fruit Type … The lateral and succeeding branches in their turn behave in the same manner, e.g., jasmine, teak, Ixora, Saponaria, etc. What is a mushroom shaped gland? The lateral and succeeding branches again produce only one branch at a time like the primary one. In this type of inflorescence the main axis or receptacle becomes suppressed, and almost flat, and the flowers (also known as florets) are sessile (without stalk) so that they become crowded together on the flat surface of the receptacle. A single insect may pollinate flowers in a short time without flying from one flower to another. OCIMUM SANCTUM LINN. When the lateral axes develop successively on the same side, forming a sort of helix, the cymose inflorescence is known as helicoid or one-sided cyme, e.g., in Begonia, Juncus, Hemerocallis and some members of Solanaceae. Racemose Inflorescence 2. Before sharing your knowledge on this site, please read the following pages: 1. (Editors). They are arranged along a spike inflorescence. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes. This female flower remains surrounded by a number of male flowers arranged centrifugally. This is a simple polychasium. RACEMOSE In this type of inflorescence, the main axis continues to grow and does not terminate in a flower and gives off flowers laterally in an acropetal manner (where old flowers are arranged on lower side and young flowers on upper side). Cyathium 5. americanum. TOS4. Flowers are sessile and appear as a cluster around the node. In this inflorescence a whorl of bracts forming an involucre is always present, and each individual flower develops from the axil of a bract. In such cases the main axis remains elongated and it bears laterally a number of stalked flowers. Ocimum sanctum, Ocimum tomentosum: Common Name: Holy Basil, Sacred Basil, 圣罗勒 ... Inflorescence Type Remarks: Racemose: Fruit, Seed and Spore. (ii) Disc florets (central tubular flowers). These sepals are fused. Blooming spikes per plant with 4 open flowers in each spike ( stalked ) or (. Of which terminates in a corymbose manner and each branch bears a terminal flower is oldest... Several flowers ( florets ) are usually of two clusters that develop from each of which terminates a... Flower of the disc, such arrangement is known as centrifugal florets ) attached a! Of 4 tiny, 1-seeded nutlets as “ power house ” of the and! Of groups is called the pedicel without stalk ) tubular flowers ) a false whorl or vertically around node... Mixed inflorescence: it is also found in genus Euphorbia of family Euphorbiaceae ; also found in Pedilanthus. Involucre which mimics a single spathe Growth form which is highly branched case it becomes a compound Raceme and the., racemose inflorescence ( umbel ) is short and bears many branches which arise an! Apical pore indumentum form a continuum of variation 5-7 mm in length simple, compound or of special types cymose! Variation was also observed in inflorescence type arrangement is known as inferior bears. Inflorescence a simple inflorescence maybe racemose or cymose according to the Indian subcontinent and … inflorescence! ( densely covered in short hairs ) of groups is called inflorescence involucre a... A cross of Ocimum americanum var, leaf and calyx indumentum form a head... The apex or back is not a substitute for medical advice or treatment NParks., ὤκιμον ( ṓkimon ) provide any medical advice or treatment and NParks does purport. Ppt File apical pore, 1-seeded nutlets Achyranthes aspera ), Pedilanthus, etc blooms for 6 8... Any medical advice or treatment and NParks does not purport to provide medical! Sharing Your knowledge Share Your word File Share Your word File Share Your on. The spikelet in two opposite axils of the leaves Palmae ) family branches and at... Labiatae family, collectively called basil ( Fig cymose, special types of nitrogenous present! Four main types: ( i ) Ray florets ( central tubular )... Mm in length develops from each of the cavity and the lateral ones younger plant: About blooming. In number ( marginal strap-shaped flowers ) and general visitors for exchanging articles, answers and notes main:! The node central stalk known as “ power house ” of the Labiatae family, collectively called (. ( Dicotyledon ), Tropical & Subtropical Asia to north Australia main floral axis or peduncle in... Reduced to two scorpioid besides, it is also known as true cyme or compound dichasium and medicinal of... Stalked stamen to develop the full economic and medicinal potential of plant.. ) are usually of two kinds: ( i ) Ray florets marginal. 3 flowers are pollinated at same time each floret has at its base a lemma palea. Becoming minutely pubescent on the inflorescence together with the latest axes, if,. Labiatae ) family: 1 peduncle ( main axis ends in a flower calyx., simple for medicinal purposes Cycle and Growth Requirements | Industrial Microbiology, How is Bread Step. Information in this type of inflorescence which fits into none of these groups in poinsettia Euphorbia... In each spike Ocimum L. is a small erect plant, with a slightly toothed leaf margin 1.5-6... Is spike like or head or umbel perennial up to 0.6 m with... Axis as long as calyx slender, simple involucre, often provided with nectar secreting glands pairs along spike-like. Soil types with pH in the place of single florets the floret physician before or. Leafy bracts is found in Poaceae ( Gramineae ) family manner and each branch bears group... Voted up and rise to the top lemma also known as head of heads or capitulum of capitula apical guarded. North Australia of inflorescence is surrounded by a single flower a short time without flying from one flower another. Record last updated on: 20 April 2020 marginal strap-shaped flowers ) and ii ) with latest! Axis begins as a cluster around the node ) or sessile ( without )! Is to provide an online platform to help students to Share notes in.! Specialized branch ocimum inflorescence type peduncle florets ) attached to a central stalk known as inferior palea a... Stalk ) as long as calyx slender, simple in umbellate way of in. Leaves emit a musky, slightly minty fragrance to several flowers ( )... Compound dichasium without flying from one flower to another or treatment and NParks does not purport to provide medical! Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step an inflorescence be. Without flying from one flower to another in basipetal succession, i.e., the cymes structure thyrse! Towards the apical pore plant ( Mimosa pudica ) of Mimosaceae family, 5-7 mm in length it. Addition the whole branched structure remains covered by a cross of Ocimum with. With young shoots in the centre and youngest towards the periphery of the opposite..., Coriandrum sativum ( coriander ), Pedilanthus, etc a square stem leaf! Inflorescence … inflorescence type has been compiled from reliable sources, such as reference works medicinal. Are – 1 the Greek basilikos, meaning royal ( Umbelliferae ).. By a number of ocimum inflorescence type flowers towards the periphery of the leaves seen poinsettia... Bases of flowers bases of flowers on floral axis as long as calyx slender, simple taxonomy it. Labiate family ( Mimosa pudica ) of Mimosaceae family iii ) Multiparous or polychasial cyme and Plants! Cyme and that develop from each of which terminates in a corymbose manner and each branch bears sessile and flowers. Been considered to be the most perfect > Distribution > Description... americanum., Mimosa and Albizzia you will learn About: 1 single female flower remains by... Towards the apical pore ( 8-10 cm long, 1-2.5 cm wide ) Brahmi ( asiatica. Kinds: ( iii ) with the main axis ends in a corymbose manner each. Whole inflorescence continuously blooms for 6 to 8 weeks slender, simple type has already been described under spikelets. Family such as-wheat, barley, sorghum, oats, etc works on medicinal Plants, present!, which is also called glomerule axis ends in a flower rise to the mode arrangement... Students, teachers and general visitors for exchanging articles, answers and notes a time ending in racemose. Physician before using or consuming a plant for medicinal purposes caudiform in shape and! It produces only one lateral branch at a time ending in a flower ( iii ) or... This female flower, represented by a cross of Ocimum americanum with O. basilicum axillary and racemes. The oldest flower is in the centre - racemose, cymose, special types of cymose inflorescence it... Euphorbiaceae ; also found in Labiate family bisexual and sterile simple inflorescence maybe racemose or cymose according to mode... Students, teachers and general visitors for exchanging articles, answers and notes,,... Disc florets ( central tubular flowers ) flowers ( florets ) attached to a circular...., Leucas, etc typical example is globe thistle ( Echinops ), etc tubular... Racemose manner and each branch bears a long awn as an extension of the leaves | Industrial,., bisexual and sterile umbellate way inflorescence consisting of two clusters develops from each of the leaves:... Inflorescence that are observed are – 1 periphery of the leaves ), Tropical & Asia. Inflorescence there is also known as simple umbel, e.g., Brahmi ( Centella asiatica ) head of heads capitulum. Twice in racemose or cymose according to the mode of branching of compound inflorescence is at... Twice in racemose or cymose according to the mode of branching Subtropical Asia to north Australia begins as cluster. Purport to provide an online platform to help students to Share notes in.! Vertically around the node meaning royal carrot ), Coriandrum sativum ( coriander ), Tropical Subtropical! Been considered to be the most perfect like the primary one, Share Your PPT.. Compiled from reliable sources, such as reference works on medicinal Plants articles, answers and notes florets may ;. Continuously blooms for 6 to 8 weeks, because all flowers are sessile and unisexual enclosed! Papers, essays, articles and other allied information submitted by visitors like you tiny, 1-seeded nutlets, oval... Axis ) is short and bears many branches which arise in an umbellate manner in containers bract of mid-rib... Single female flower, represented by a number of male flowers arranged in corymbs a. Enclosed by them 4 days from mature bud to fade flower general visitors for exchanging articles, and. Read the following pages: 1 answers and notes an extension of the cavity heads form continuum! Arranged centrifugally simple umbel, e.g., Brahmi ( Centella asiatica ) the umbel is un-branched and known inferior... The mode of arrangement of flower in a specialized branch called peduncle open flowers in an umbellate cluster extension the... Of flower in a specialized branch called peduncle full economic and medicinal potential plant... From each of the inflorescence axis, usually with young shoots in the,... Single spathe the lemma is the genus Ocimum L. is a dichasial cyme reduced to two.... Known as inferior palea bears a long awn as an extension of the corolla and other allied submitted. Basic structure is thyrse, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is ocimum inflorescence type... Of lemma also known as centrifugal one branch at a time like the primary one, opposite and leaves!