Supported upon a stem or stalk. The pedunculated oak has its acorns borne upon a footstool.

The appearance of regularity of structure in the flowers of plants which normally bear irregular flowers.

The bony arch to which the hind limbs of vertebrate animals are articulated.

The leaves of the corolla, or second circle of organs in a flower. They are usually of delicate texture and brightly coloured.

Having flattened, leaf-like twigs or leafstalks instead of true leaves.

The colouring material produced generally in the superficial parts of animals. The cells secreting it are called Pigment - Cells .

Bearing leaflets on each side of a central stalk.

The female organs of a flower, which occupy a position in the centre of the other floral organs. The pistil is generally divisible into the ovary or germen, the style and the stigma.

Or Placental Mammals. See Mammalia .

Quadrupeds which walk upon the whole sole of the foot, like the bears.

Readily capable of change.

The latest portion of the Tertiary epoch.

(in plants): The minute bud between the seed-leaves of newly-germinated plants.

Rocks supposed to have been produced by igneous action in the depths of the earth.