Page 142 - Ultimate Visual Dictionary (DK)

PLANTS

Flowers 1 Inner tepal Honey
(monocotyledonous
guide
petal)
Groove
FLOWERS ARE THE SITES OF SEXUAL REPRODUCTION in secreting
flowering plants. Their component parts are arranged nectar
Style
in whorls around the receptacle (tip of the flower stalk). Filament
The sepals (collectively called the calyx) are outermost;
typically small and green, they protect the developing
flower. The petals (collectively called the corolla) are
typically large and brightly colored; they are found inside
the sepals. In monocotyledonous flowers (see pp. 126-127), sepals
Outer tepal
and petals are indistinguishable; individually they are called tepals (monocotyledonous
Stigma
(collectively called the perianth). The petals surround the male sepal)
Anther
and female reproductive structures (androecium and gynoecium). EXTERNAL VIEW
The androecium consists of stamens (male organs); each stamen
is made up of a filament (stalk) and anther. The gynoecium
has one or more carpels (female organs); each carpel consists
of an ovary, style, and stigma. Some flowers (e.g., lily) occur Outer tepal
singly on a pedicel (flower stalk); others (e.g., elder, (monocotyledonous
sepal)
sunflower) are arranged in a group (inflorescence)
on a peduncle (inflorescence stalk).
A MONOCOTYLEDONOUS
FLOWER
Lily Inner tepal
(Lilium sp.) (monocotyledonous
Ovary petal)
Syncarpous
(fused carpels) Honey
gynoecium Stigma guide

Style
Tepal
scar
Anther
Stamen Receptacle
Filament
Ovary
wall Ovule
Pollen on
anther Pedicel
(flower
stalk)

Papilla
(fleshy hair)
Outer tepal Style Folded inner tepal
sheath (monocotyledonous petal)
Stigma Ovary
Receptacle
Pedicel
Anther (flower
stalk)
LONGITUDINAL SECTION Filament
THROUGH FLOWER BUD
140