having unisexual flowers with staminate (male) and pistillate (female) flowers borne on the same tree, along with some perfect flowers on each tree.

very thin, sharp, pointed, pin-like leaves; found on pines, firs and some other softwoods.

layer of tissue one to several cells thick found between the bark and the wood; divides to form new wood and bark.

having unisexual flowers with staminate (male) and pistillate (female) flowers borne on the same tree, though often on different branches.

inner bark of a tree that carries food and sugars from the leaves to other parts of the tree.

surface or section of a tree shown when wood is cut down its length straight through the middle.

a unisexual (male) flower bearing only stamens.

A usually showy part of the outer portion of a flower that is not differentiated into a sepal or petal.

an imperfect flower; a flower with organs of only one sex present.

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