This document presents information on different types of inflorescences. It discusses racemose inflorescences, where the main axis grows continually and flowers form laterally in an acropetal succession. Some examples of racemose inflorescences include racemes, spikes, spikelets, catkins, spadices, corymbs, umbels, and capitula. It also discusses cymose inflorescences, where the main axis growth is checked by the formation of the terminal flower, leading to younger flowers developing on lateral branches. Examples of cymose inflorescences include uniparous, biparous, and multiparous types. The document also briefly describes some

2. PRESENTED BY
SUBROTO PODDER
STUDENT ID: AT-120802

3. Presentation Title
 INFLORESCENCE

4. INFLORESCENCE
 The branch system of the floral region bearing a
group of flowers is called inflorescence.

5. Types of inflorescence
1.Racemose inflorescence
2.Cymose inflorescence
3.Special types

8. Racemose inflorescence
 The main axis does not terminate into a
flower,but it keeps on growing continually and
gives off flowers laterally in acropetal
succession.Here the youngest flower is present at
the apex and the older flowers towards the base.

9. Different types of racemose
inflorescence
1.Raceme:The main axis in this case is elongated
and it bears laterally a number of flowers which
are all stalked. e.g.Radish
2.Spike:The main axis is elongated and the lower
flowers are older,opening earlier than the upper
ones.e.g.Amaranth
3.Spikelet:This is a very small spike with one or a
few small flowers. e.g.Grass

10. 4.Catkin:This is a spike with a long and pendolous
axis which bears unisexual flowers.e.g.Mulberry
5.Spadix:This is a spike with a fleshy axis which is
enclosed byone or more large.The spadix is found
in monocotyledons only.e.g.Banana
6.Corymb:The main axis is comparatively short and
the lower flowers have much longer stalks or
pedicels than the upper one.e.g.Candytuft

11. 7.Umbel:The primary axis is shortened and it bears
at its tip a group of flowers which have pedicels of
more or less equal lengths.e.g.Coriander
8.Capitulum:The main axis or receptacle is
suppressed,becoming almost flat and it bears a
mass of smaii sessile flowers on its surface with
one or more whorls or bracts at the base forming
an involucre. e.g.Sunflower

12. Cymose inflorescence
 The growth of the main axis is checked soon by
the development of a flower at the apex and the
lateral axis below the terminal flower also ends in
a flower and thus its growth is also checked.In
cymose inflorescence the terminal flower is the
oldest and the younger flowers are present on the
lower side.

13. Different types of cymose
inflorescence
 Uniparous:This type of inflorescence the main
axis ends in a flower and it produces only one
lateral branch at a time ending in a flower.
 There are two types of uniparous
1.Helicoid e.g.Begonia
2.Scorpioid e.g.Heliotrope

14.  Biparous:In this type of inflorescence the main
axis ends in a flower and at the same time it
produces two lateral younger flowers sessile or
stalked.e.g.Jasmine
 Multiparous:In this kind of cymose inflorescence
the main axis as usual ends in a flower and at the
same time it again produces a number of lateral
flowers around.e.g.Madar

15. Special type
 Cyathium:A cup shaped involucre containing
nectar secreting glands,a centrally placed large
female flowers and many male
flowers.e.g.Euphorbia
 Verticulaster:This is a special form of cymose
inflorescence.In it there is a cluster of sessile or
almost sessile flowers in the axil of a leaf,forming
a false whorl at the node.e.g.Leonurus

16.  Hypanthadium:The fleshy receptacle forms a
hollow cavity with an apical opening guarded by
scales and the flowers are borne on the inner wall
of the cavity,the inflorescence is
hypanthodium.Here the female flowers develop
at the base of the cavity and the male flowers
higher up towards the apical pore. e.g.Ficus

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