A spike is a raceme, but the flowers develop directly from the stem and are not borne on pedicels, as in … Racemose inflorescence is further divided into different types on the basis of growth of the main axis. The following is based on Focko Weberling's Morphologie der Blüten und der Blütenstände (Stuttgart, 1981). The older flowers are present towards the base and the younger flowers are towards the apex. RACEMOSE INFLORESCENCE. When flowers without pedicel are arranged in acropetal manner. 1. Examples are: crown grass(Paspalum). Inflorescence I ntroduction An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. In this a flat-topped or rounded inflorescence with the pedicels originating from a common point. - of leaves or flowers; developing or opening in succession from base to apex ). Based on the growth of peduncle, the inflorescence is again divided as. Simple Inflorescence A simple inflorescence maybe racemose or cymose according to the mode of branching. Racemose inflorescence: In this type of inflorescence, the main axis is unlimited in growth, branched or unbranched. Racemose Inflorescence Based on Shortened Main Axis: Corymb: In this type of inflorescence length of pedicels of the lower flower is more than length of pedicels of upper ones, so that all flowers come at the same level. e.g Mluberry. Eg. Characteristic Feature of Racemose Inflorescence: Diagramatic Representation of Racemose Inflorescence: When flowers with pedicel are arranged in acropetal manner. Racemose inflorescence: main axis is unlimited in growth, branched or unbranched. Copyright © 2020 Entrancei. SCOPE: This review considers (1) racemose inflorescences of early-divergent and lilioid monocots and their possible relationship with other inflorescence types, (2) hypotheses on the morphogenetic significance of phyllomes surrounding developing flowers, (3) patterns of FSB reduction and (4) vascular patterns in the primary inflorescence axis and lateral pedicels. Racemose types: here the peduncle grows very long and flowers are arranged in an acropetal manner (acro= tip, petal= petals). There are two major types of inflorescence : Racemose: it is an indeterminate and open type of inflorescence; Cymose: it is a determinate and closed type of inflorescence Clustered forms of flowers can be found arranged on branches different from the other branches of the plant. Example: Festuca. The arrangement of pedicels on a peduncle characterizes different kinds of inflorescences. This type of inflorescence is found in family-Solanaceae. The types of the racemose inflorescence are the raceme, spike, corymb, spadix, etc. Spikelet - In this a small spike, characteristic of grasses and sedges. An inflorescence has one main stalk, or peduncle. The individual flowers may be sessile or pedunculated. The difference between agnatha and gnathostomata? What are different types of racemose inflorescence? There are three main types of inflorescence – racemose, cymose, and special type. Racemose is a type of inflorescence with a continuously growing peduncle. E.g Delphinium (Larkspur, Raphanus (Radish), Mustard. The peduncle seldom always terminates in a flower. TYPES OF INFLORESCENCE. Inflorescence The arrangement of flowers on floral axis or peduncle resulting in formation of groups is called inflorescence. In this type, the growth of the main axis is indefinite, as the terminal bud does not flower. Encyclopædia Britannica, Inc. Spike: When flowers without pedicel are arranged in acropetal manner. Examples : Mustard, radish etc. whether the apex gets converted into a flower or continues to grow, two major types of inflorescences are defined – racemose and cymose. The pedicels of flowers are of the size, e.g., in Larkspur. An inflorescence may be; simple, compound or of special types according to the mode of branching. Raceme : The main axis has indefinite growth, where more or less equally pedicellate flowers are bourne, e,g., Brassica nigra (Brassicaceae) 5. Raceme - an elongate, unbranched, indeterminate inflorescence with pedicellate flowers. What are the characteristics of being human? D. Brassica. It is of two types; viz. Their general appearance is the same as an umbrella when we see them from the top. It is further of two types: Mixed spadix: eg: Banana Here peduncle is thick and fleshy with upper part sterile and lower part bearing one or both the types of unisexual flowers, surrounded by a large brightly coloured bract called spathe e.g: Colocasia (Arum), Arisaema. 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