alternate - leaves arranged singly, alternating from one side to the other.
bract - a modified leaf that lies underneath another structure.
branchlet - the second smallest division of a branch.
bud - a protuberance found at the end of or along a twig containing an immature leaf or flower.
cone scale - one of the woody flaps that makes up a cone.
conical - a tree with a shape somewhat like a cone with longer branches at the bottom and progressively small branches higher up the tree.
conifer - a plant that reproduces through cones.
deciduous - a plant that loses its leaves in the fall and grows new leaves in the spring.
erect - standing out instead of drooping.
evergreen - a plant that does not lose its leaves in the fall and remains green all year long.
family - a level of taxonomic organization containing a number of genera.
four-sided - having a square cross-section.
genus - a level of taxonomic organization containing a number of species. pl. genera.
irregular - a tree having a non-conical, non-symmetrical shape with non-uniform branch lengths.
opposite - leaves arranged in pairs on opposite sides of the twig.
order - a high level of taxonomic organization containing a number of families.
ornamental - a non-native, intentionally planted tree.
pitch - the sticky resinous sap of many conifers.
prickle - a sharp feature of some cones.
shoot - a young, newly growing branch.
species - the most specific level of the taxonomic organization of organisms.
spiral - leaves arranged around a twig in a pattern like candy-cane stripes.
stalked - attached to the twig with a green stalk instead of being attached directly.
stem - a stalk, connecting other parts of a plant.
taxonomy - the system of classifying organisms into groups.
three-sided - having a triangular cross-section.
twig - the smallest division of a branch.
whorl - a ring of branches coming off of a trunk at the same level.
woody - being made of wood.