Zinnia, Cosmos, Tridax, Vernonia, etc. Inside the involucre, surrounding the stalk. The flowers may be pedicellate (stalked) or sessile (without stalk). Each cluster of flowers in this type of inflorescence represents … This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. It never terminates into a flower and bears flowers in acropetal (growing upward from the base or point of attachment) The main types of racemose inflorescence are: Raceme: The main elongated axis bears stalked flowers. c) of separate sexes. b) spadix. Spikeletes are characteristic of Poaceae (Gramineae) or Grass family, e.g., grasses, wheat, barley, oats, sorghum, sugarcane, bamboo, etc. 2. Cymose Inflorescence: Inflorescence: Type # 3. In such cases the main axis remains elongated and it bears laterally a number of stalked flowers. This type of inflorescence is found in genus Euphorbia of family Euphorbiaceae; also found in genus Pedilanthus of the family. Your email address will not be published. Besides, there is also a special type of inflorescence which fits into none of these groups. In both cases, the basal portions of the successive daughter axes become straightened up, to form a false central axis or Sympodium. Flowers and glumes are arranged on the spikelet in two opposite rows. L'inflorescence (du latin inflorescere : fleurir) est la disposition des fleurs sur la tige dune plante à fleur. A single insect may pollinate flowers in a short time without flying from one flower to another. If we take a closer look at the cyme type, there can be simple cymes and dichotymously-branched cymes where the apex of the peduncle branches more or less equally into two. All three types of flowers are … types of inflorescences Inflorescence: the arrangement of flowers on the stem or twig of a plant. 2. From the main axil, lateral axil arises, on which flowers you can find the flowers. 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. Just above the glumes, there is series of florets, partly enclosed by them. Is this an example of necrosis or apoptosis? 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. Types of Inflorescence 1. Here the main axis ends in a flower and it produces only one lateral branch at a time ending in a flower. Besides, it is also found in Acacia and sensitive plant (Mimosa pudica) of Mimosaceae family. 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. The individual flowers (florets) are bracteate. This is also known as true cyme or compound dichasium. Some of the common types of inflorescences are as follows: Spike: The flowers, which are with a very short or with no pedicel, are attached along the elongate and unbranched peduncle of the inflorescence (examples: plantain, spearmint, tamarisk). Types of Inflorescence This type is also called definite or determinate infloresence. The typical example is globe thistle (Echinops). Uniparous Cyme: The main axis ends in a flower below which a daughter axis is produced which again ends in a flower. The inflorescence may be Simple, Compound, Mixed, or Of Special Types. Simple racemose inflorescence is of following types. 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