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How to describe anangiosperm flower
Dr MAHESH P.UDept of Dravya guna
Govt ayurveda collegeTripunithura
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Flower
The most colour full part
of a plant
Consist of
Calyx
Corolla
Andrecioum
Gynocioum
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FLOWER AMATOMY
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Description in general
1,Pedicellate or sessile
2,Bracteate or Ebracteate
3,Actinomorphic or Zygomorphic
4,Unisexual or Bisexual
5,Complete or Incomplete
6,Regular or irregular
7,Hypogynous or Perigynous or Epigynous
8,Colour of flowers
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1,Pedicellate or sessile
Pedicellate
Pedicel-stalk of flower
eg. Mustard
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Cont..
Sessile
without pedicel
Eg.Achyranthes
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2, Bracteate or Ebracteate
Bracteate
Having bract
(modified leaf in whose
axil flower arise)
Eg. Adathoda
vesica
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Cont..
Ebracteate
With out bract
eg. solanum
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3,Actinomorphic or Zygomorphic
Actinomorphic
(Regular)
Radialy symetrical
can devide into two
equal halves along
more than one
longitudnal plane
eg. Vinca rosae
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Cont..
Zygomorphic
( irregular)
Bilateraly symetrical
one plane of symmetry
Eg. Pisum sativum
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4,Uni or bi sexual
Unisexual
Only male or female
Reproductive organ in a
flower
eg. morus
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Cont..
Bisexual
Both male & female
Rep.organs in same
eg. Brassica
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5,Complete or incomplete
Complete
Present all 4 whorls
Calyx,corolla androecium
gynocieum
eg. Hibiscus
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Cont..
Incomplete
Flower lacking
any one four
of whorls
eg. Luffa
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6,Hypo, Peri ,Epi Gynous
Hypogynous
Other whorls below
gynoecium ovary
superior
Eg. Solanum
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Cont…
Perigynous
sepals,petals,stamens
round gynoecium
ovary half superior
eg. Prunus(apple)
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Cont…
Epigynous
all whorls joined to ovary ,
inferior ovary
Eg.Coriandrum
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7, Acyclic or Cyclic
Acyclic
flowers with floral
leaves arranged
in spiral
Eg.Ranunculus
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Cont..
Cyclic
Parts of flower
arranged in whorls
eg.solanum
8, Colour
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Calyx
Outer whorl of flower
(sepals)
Unit - Sepal
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Calyx
1, Number of sepals
2, Polysepalous or Gamosepalous
If polysepalous- Nature and form
Cruciform
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2,Poly or Gamo sepalous
Polysepalous
Free distinct sepals
eg. mustard
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Cont..
Gamosepalous
with united sepals
eg. Pea,hibiscus
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3, Aestivation
Aestivation- mode of sepal
arrangrment in flower
bud
a, Valvate
Sepals united not overlap
at edges
eg.solanum
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Cont…
Induplicate
Sepals folded
inward
eg. Ipomea
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Cont..
Convolute
one sepal over lap
another with one margin
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Cont..
Imbricate
sepals overlap
each other one
sepal completely
internal one
completely
external .
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Cont..
Quincuncial
arrangement of 5 sepals
two exterior
two interior
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4.Caducous or persistant
Caducous
Sepals fall of early
Eg.pepaver
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Cont..
Persistant
remain attached
till matuaration
eg . solanum
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5.Petaloid
Petaloid sepals
Sepals enlarged like
petals
Eg.mussanda
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Corolla
Whorl of petals
1.No. of petals
with colour
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2.Poly or Gamo petalous
Polypetalous
With free petals
eg.Brassica, Rose
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Polypetalous
A, cruciform
Four free petals arranged
in cross.
Each petals differentiated
In to a curve(Claw)
and limb
Eg.Brassica
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Polypetalous
B, Caryophyllaceous
Five free petals
with curve(claw)
limb at right angle to the
claw
Eg.Dianthus
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Polypetalous
C, Rosaceous
five or more petals
No distinguish limp &
Calw
Eg. Rose
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Gamopetalous
Gamopetalous
United petals
Eg,Ipomea
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Gamopetalous
a, Campanulate
Bell shaped fused petals
Eg.Cuscuta
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Gamopetalous
B,infundibuliform
Funnel shaped
fused corolla
eg.ipomea
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Gamopetalous
c,Hypor crateriform
Fused corolla with
limb - long tube
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Gamopetalous
D, Rotate
wheel (disc) shaped
fused corolla
Eg.solanum
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Gamopetalous
E, Papilionaceous
Butterfly like, zygomorphic
Corolla – 1 large
standerd,2 lateral wings,
2 inner small keel
Eg.Pisum sativum
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Gamopetalous
F, Bilabiate
Two lipped,
zygomorphic
fused corolla
Eg.ocimum, Antirrhinum
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Gamopetalous
G, Tubular
tube like fused petals
eg. helianthus
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Aestivation
arrangement of
corolla in bud
A, Valvate
Corolla touch
each other at
margins not
overlap
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Aestivation
B, valvate induplicate
Valvate –margins
of petal folded inward
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Aestivation
c, Twisted
(convolute)
One margin overlap
other
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Aestivation
D, imbricate
One petal completely
out side
One completely inside
One margin in for 3
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Aestivation
E, Quincuncial
5 petals
2 exterior,
2 interior,1 one margin
exterior other interior
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Aestivation
F, vexillary
5 petals
Posterior largest
Two lateral petals
two small anterior
petals(keels)
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Spl features
a, SPUR
Sac like projection of
Petal
Eg viola,tropaeolum
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Spl feature
B, nectary
nectar secreating
glands in petals
eg.salvia
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Spl feature
c, Corona
Appendages in between
Corolla and stamens or on
corolla
Eg. Calotropis
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Cont…
d,sepaloid petal
Petals like sepals
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Androecium
collective term for
all stamens &
staminoides
Stamen- bear pollen
1, No.of stemens
1-10 or indefinite
With colour of anther
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2,Polyandrous or adelphous
Polyandrous
Free stamens
Eg. peppaver
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Polyandrous
a, Didynamous
Four stamens in two
pairs one pair shorter
than the other
Eg. ocimum
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Polyandrous
b, Tetradynamous
Four long and
two short stamens
eg.brassica
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Polyandrous
obdiplostemonous
stamens in two alternating
whorls outer whorl opp
to petals
eg. murraya
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Adelphous
Adelphous-
United stamens
A, Monadelphous
united in one
bundle by filaments
Eg.Hibiscus
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Adelphous
B, Diadelphous
stamens arranged
in two bundles
eg. pappilonaceae
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Adelphous
C, Polyadelphous
Stamens united
in many bundles
eg. Citrus
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3,Syngenesious, epipetalous
Gynandrous or synandrous
syngenesious
anther cohering
in a ring
eg.Helianthus
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Cont..
Epipetalous
Stamens born on
Corolla (petals)
Eg.ipomea,
convolvulus
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Cont..
Gynandrous
stamen adhering
to carpels
(which bear ovules)
eg.calotropis
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Cont…
Synandrous
Stamens fuse to
From one
Eg cuccurbita, colacasia
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4,Filaments
A, long filament
B,short filament
C,Flat filament
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5,Fixation of anthers
a, Basifixed
Anther Fixed to filament
at base
eg.Brassica,pepaver
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Cont..
B,Dorsifixed
Filament attached
to dorsal side of anther
eg.Bauhinia
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Cont…
c,Versetile
anther can move
in any way
eg. graminae
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Cont…
D, Adenate
Fusion of anther
and filaments
eg. Michelia champaka
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5,Anthers. Mono or di
Monothecous
Single celled (lobe) anther
eg. hibiscus
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Cont…
Dithecous
two celled(lobe)
anther
eg. pepaver
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6,Dehisence of anther
a,introse
anther facing inwards
eg.solanum, hibiscus
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Cont..
b,Extrose
anther facing out ward
from center of flower
eg. argimome
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Cont..
C,Inserted
Stamens shorter
than the corolla tube
Eg.ixora, mussanda
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Cont…
D, Exerted
Stamens projecting
beyond petals
eg. Passion flower
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Staminode
Staminode
Stamen which do not
Bear fertile pollen
Eg.stellaria
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Gynoecium
ovary
ovule
style
stigma
Ovule-minute body in
ovary which after
fertilization-- seed
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1,Apo or syn carpous
Apocarpous
Carpels free from each
other
eg.nigella,ranunculus
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Cont…
Syncarpous
carpels united
compound ovary
eg. citrus
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2,Ovary position
Superior ovary
Ovary above
Calyx corolla .ect
eg.brassica
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Cont..
Inferior ovary
Ovary below
calyx corolla ect
Eg. coriandrum
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Cont …
semi inferior
Ovary in intermediate
position
Eg. pea
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3,Carpels number
with ovule number
bicarpellary
Eg. brassica
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Cont…
Tricarpellery
eg.lilliaceae
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Cont…
Tetracarpellary
eg. Dathura
Pentacarpellery
Eg melia
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Cont…
Poly carpellery
pepaver ,lotous
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4 Nature of style
a,short style
B long style
C, Divided style
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Cont…
D, Terminal style
style lying in same line with ovary
Eg hibiscus
E, gynobasic style
style arises from depression in center of ovary
Eg. Ocimum,salvia
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5,Nature of stigma
A, Simple
B, Capitate
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Cont..
C, divided
Stigma divided into
lobes
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Cont…
d, Feathery
Eg.gramenae
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Cont…
E, Bearded
like beard
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COnt..
F, Curved
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PLACENTATION
arrangement of
ovules in syncarpous
ovary
A,Parietal
Carpels fused to one
ovules attach at int
Margin of ovary
Eg. Brassica,argimone
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Cont…
B, Axile- carpels fuse
together in center of
ovary to from single
central placenta
Eg. Hibiscus
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Cont…
C, free central-
Placenta as central up
growth from ovary base
eg Stellaria
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Cont…
D, Marginal –
placenta devolope
at junction of two
carpels
Eg, Pea
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Cont..
E, basal-
ovules at
base of ovary
ovules solitery filling
the cavity
eg.Compositae
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Cont…
F.superficial-
Carpels numerous
placentae devolope all
round
the innerpartition wall
ovary multilocular
Eg.Nymphae
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