Flower Anatomy
perfect flower
A flower that has both male and female parts is called a ______________________
imperfect flower
A flower that is missing either male or female parts is called an
stigma
A sticky tissue at the end of the pistil that is receptive to pollen
panicle
An elongated inflorescence with a central axis along which are branches that are themselves branched.
style
Below the stigma is a rod-shaped middle part called the ______________________
sepals
Beneath the petals are more leaf-like structures that are often green, called...
pistillate
Flowers that have only female part
staminate
Flowers that have only male part
complete flower
If a flower has sepals, petals, pistils, and stamen
incomplete flower
If a flower is missing either the sepals, petals, pistils or stamens, it is referred to as an__________________.
determinate
If the first flower to open is at the apex of the stem and the progression of flowering is downward or outward, the inflorescence is this.
indeterminate
If the last flower to open is terminal on the main axis and the progression of flowering is inward or upward, the inflorescence is
bract
Modified leaf at the base of a flower or floral inflorescence.
filament
Part of the stamen, this part is stalk-like and holds up the anther.
anther
Structure that holds the pollen
cyme
Takes on several forms, although it is usually a flat-topped inflorescence.
calyx
That which is formed when all of the sepals are fused together.
pistil
The female part of a flower
pedicel
The flower stem is referred to as
peduncle
The main stem of an inflorescence is known as
stamen
The male part of a flower is called this...
receptacle
The portion of the pedicel that holds the flower parts
ovary
The swollen base of the pistil that contains the eggs
perianth
Together, the petals and sepals are called this
corolla
When all the petals are fused together, they form
tepals
With some plants, a clear distinction between petals and sepals cannot be made. In these cases, the parts of the perianth are calle
head
a rounded or flat-topped cluster of sessile flowers
corymb
a short and broad, flat-topped indeterminate inflorescence having a main vertical axis and pedicels or branches of unequal length. The outer flowers open first.
spadix
a spike with a thickened, fleshy axis, usually enveloped by a showy bract called a spathe
catkin
a spike, raceme, or cyme composed of unisexual flowers without petals and falling as a unit.
raceme
an elongated inflorescence with a central axis along which are attached simple pedicels of more or less equal length.
spike
an elongated inflorescence with a central axis along which sessile flowers are attached
umbel
an inflorescence having several branches arising from a common point
petals
colorful leaf-like structures that often attract animals and insects
monoecious
plants bear both male and female flowers on one plant
dioecious
plants have male and female flowers on separate plants.
inflorescence
the branching system of the stem
pollen
the grain released by flowers, which contains the sperm.