Plant Structure

Front 1

a single flower borne on a peduncle

Back 1

Solitary Flower

Front 2

Inflorescence

Back 2

Cluster of flowers

Front 3

Petals, sepals, stamens, pistils all present

Back 3

Complete flower

Front 4

Missing one or more of, petals, sepals, stamens, pistils

Back 4

Incomplete flower

Front 5

Male and female parts both persent; stamen and pistil both present (bisexual)

Back 5

Perfect flower

Front 6

Only male or only female parts present; only stamens or pistils (unisexual)

-- Staminate flowers

-- pistillate flowers

Back 6

Imperfect flower

-- Staminate flowers

Front 7

Bilaterally symmetrical (irregular)

Back 7

Zygomorphic flower

Front 8

Radically Symmetrical (regular)

Back 8

Actinomorphic

Front 9

Plant with only perfect (bisexual) flower

Back 9

Hermaphrodite

Front 10

Both staminate and pistillate flowers on the same plant

Back 10

Monoecious

Front 11

Staminate and pistillate flowers on separate plants

Back 11

Dioecious

Front 12

Plant with both perfect and imperfect flowers on the same plant

Back 12

Polygamous

-- polygamo dioecious

-- polygamo-monecious

Front 13

series of individual flowers on unbranched stalk; without pedicle (sessile)

Back 13

Spike

Front 14

series of individual flowers on unbranched stalk; with pedicle

Back 14

raceme

Front 15

Flat topped raceme with elongated pedicles reaching the same level; outer pedicels longest

Back 15

coymb

Front 16

Cluster of spikes, racemes of corymbs

Back 16

panicle

Front 17

Flat topped or rounded with the pedicels originating from a common point

Back 17

Umbel

Front 18

inflorescence in which each floral axis terminates in a single flower

Back 18

cyme

Front 19

Elongated spike with unisexual, apetalous flowers; often pendulous (drooping)

Back 19

catkin

Front 20

flowers whorled in rings at intervals up the stem

Back 20

verticil

Front 21

many unstalked flowers massed together on a compound receptacle

Back 21

capitulum

Front 22

the inner sterile whorl of a flower, often colorful to attract pollinators.

Back 22

petal

Front 23

a collective term for all the petals

Back 23

corolla

Front 24

the outer sterile whorl of a flower, usually green

Back 24

sepal

Front 25

a collective term for all the sepals

Back 25

Calyx

Front 26

petals and sepals that are alike in colour and shape.

Back 26

tepals

Front 27

a collective term for all the petals and sepals

Back 27

perianth

Front 28

a floral structure formed by the fusion of floral parts around a pistil

Back 28

hypanthium

Front 29

the basal portion of a flower to which all floral parts are attached.

Back 29

receptacle (or torus)

Front 30

the male reproductive organ of a flower

Back 30

stamen

Front 31

the fertile portion of a stamen, the part in which pollen is produced, usually consisting of 4 microsporangia

Back 31

anther

Front 32

the sterile portion of a stamen, supports the anther.

Back 32

filament

Front 33

the female reproductive organ of a flower, one unit of a compound pistil.

Back 33

carpel

Front 34

The female reproductive organ of a flower, composed of 1 to several carpels

Back 34

pistil

Front 35

the pollen receptive structure at the top of a pistil

Back 35

stigma

Front 36

the stalk between the stigma and the ovary

Back 36

style

Front 37

the fertile part of the pistil containing the ovules and developing into the fruit

Back 37

ovary

Front 38

The chamber in a carpel, within which the ovules are located

Back 38

locule

Front 39

the nucellus and integument contains the egg nucleus

Back 39

ovule

Front 40

a collective term describing all the pistils in a flower

Back 40

gynoecium