A plant family of the order Fagales, subclass Hamamelidae, class Magnoliopsida. They have simple, serrate, alternate leaves. Male flowers are borne in long, pendulous catkins; the female in shorter, pendulous or erect catkins. The fruit is usually a small nut or a short-winged samara.
    

concept

A tree, possibly siver birch (Betula pendula). Pencil drawing.

Golden-leaved alder (Alnus species): leafy shoot. Chromolithograph, c. 1870, after H. Briscoe.

A hazel or filbert plant (Corylus species): fruiting branch with separate nut and leaf. Watercolour.

Hazel twig (Corylus avellana) with an associated insect and its anatomical segments. Coloured etching, c. 1831.

Leaves of birch (Betula species). Pen drawing with pencil.

Birch (Betula species): twigs and catkins. Pen and pencil drawings.

Leaves and twigs of lilac (Syringa), box (Buxus) and alder (Alnus). Watercolour, pencil and pen drawings.

Autumn leaves of alder (Alnus species). Watercolour drawing.

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Betulaceae

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Leaves of birch (Betula species). Pen drawing with pencil.

Birch (Betula species): twigs and catkins. Pen and pencil drawings.

A hazel or filbert plant (Corylus species): fruiting branch with separate nut and leaf. Watercolour.

Leaves and twigs of lilac (Syringa), box (Buxus) and alder (Alnus). Watercolour, pencil and pen drawings.

Autumn leaves of alder (Alnus species). Watercolour drawing.