Twig

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A twig is a small thin terminal branch of a woody plant.
Twigs are critically important in identification 

of trees, shrubs and vines, especially in wintertime.^[1]
The buds on the twig are an important diagnostic characteristic,

 as are the abscission scars where the leaves have fallen away.
The color, texture, and patterning of the twig bark are

 also important, in addition to the thickness and nature
of any pith of the twig.

There are two types of twig, vegetative twigs and fruiting spurs.
Fruiting spurs are specialized twigs that generally branch off
the sides of branches and leading twigs, and
are stubby and slow-growing, with many annular ring 

markings from seasons past.
The age and rate of growth of a twig can be determined by counting
the winter terminal bud scale scars, or annular ring marking,
down the length of the twig. Are also these are as the many

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