Page 16 - Forest Trees of Maine

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Structure in brackets indicates part to which the term applies.
Abortive [fruit] Not developed completely.
Alternate [arrangement of leaves or buds] Not opposite on sides of twig.

Appressed Pressed close or lying flat against something.
Alternate Awl-shaped [leaf] Narrow and tapering to a sharp point.
Axillary Growing from the Axil. The angle between the upper
side of a leaf or stem and the supporting stem or branch.
Basal disc [fruit] A plate-like structure on the base of a fruit.
Bloom A whitish covering; usually on new shoot growth or fruit.

Bole The main stem of a tree; usually the part that is commercially useful for
lumber or other wood products.

Bract A leaf-like structure which is attached to a flower, a fruit or to its stalk.
Branchlet Shoot growth of the latest growing season.
Broadleafed Having relatively broad rather than needle-like or scale-like leaves.

Bur [fruit] A prickly or spiny husk enclosing the seed.
Capsule [fruit] A dry fruit enclosing more than one seed and splitting freely
at maturity.
Catkin A compact, cylindrical cluster of flowers of the same sex.
Chambered [pith] With hollow cavities separated by discs or plates.
Compound [leaf] A leaf composed of smaller leaf units or leaflets.

Conical Wide at the base and gradually tapering to a point;
circular in cross section.

Conifer Cone-bearing trees; the “evergreens.”
Cordate [leaf] Heart-shaped at the petiole end or base.
Corymb A flat-topped floral cluster with outer flowers opening first.

Cup [fruit] The scaled, concave basal portion of oak fruit.
Cyme A flattened flowering structure, center flowers bloom earliest.
Deciduous [leaves] All leaves drop in the autumn; not evergreen.
Diaphragmed [pith] Solid but divided into sections by firmer discs.

Drupe [fruit] Fleshy outside, hard and stone-like inside.

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