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An acorn from a dicotyledon.

Acorn

An acorn from a dicotyledon.

A cross-section of an acorn.

Cross-section of an acorn

A cross-section of an acorn.

This illustration shows the flower and sporophylls of Angiosperms: 1, flower of Sedum with leaf-like perianth, p; microsporophylls, s; megasporophylls, c. 2, microsporophyll of the buttercup, showing four-lobed anther and filament. 3, diagram of a cross-section of anther, showing the breaking down of the tissue about the four sporangia and the beginning of the opening of the anther. 4, one of the sporangia from a young anther, as seen in cross-section-m, spore mother cells. The large cells surrounding the mother cells are nourishing cells, known as the tapetum, and disorganize as the spores mature. At the right a mother cell forming four microspores, the upper one being characterisitic of dicotyledons and the lowr of monocotyledons.

Angiosperm

This illustration shows the flower and sporophylls of Angiosperms: 1, flower of Sedum with leaf-like…

Embryo of Cherry,(Gray, 1858).

Cherry Embryo

Embryo of Cherry,(Gray, 1858).

Embryo of Morning Glory,(Gray, 1858).

Embryo

Embryo of Morning Glory,(Gray, 1858).

Embryo of Morning Glory,(Gray, 1858).

Embryo

Embryo of Morning Glory,(Gray, 1858).

Embryo of Sugar Maple,(Gray, 1858).

Sugar Maple Embryo

Embryo of Sugar Maple,(Gray, 1858).

"Valerian is an order of herbs or rarely shrubs belonging to the division of monopetalous dicotyledons having the stamens arising from the petals. The order is distinguished from its congeners by the opposite leaves; small irregular flowers. It contains 12 genera and about 190 species, distributed through Northwestern America, Europe, Northern Africa, and temperate Asia– unknown in Australia, and only one species South African. It has a penetrating odor, and a bitter, acrid, somewhat aromatic taste; when distilled with water it yields a volatile oil and valerianic acid. Cats have a strange liking for the odor, and it exercises a remarkable intoxicating or stimulating power over them; the plant is sometimes called cats' valerian. It is often used to tempt cats to an unhappy fate."—(Charles Leonard-Stuart, 1911)

Valerian

"Valerian is an order of herbs or rarely shrubs belonging to the division of monopetalous dicotyledons…