Leaf Types - Shapes - Arrangements - Characteristics

 
Broad-lanceolate: Shaped like a lance, the leaf about 5 times longer than wide, pointed at end.
Concolorous: The leaf is the same color on both sides.
Connate: Opposite leaves are jointed around the stem.
Cordate: The leaf is shaped like a heart.  The "wide" part of the heart attaches to the leaf stem.
Discolorous: Where the upper leaf surface is darker in color than the lower leaf surface.
Dull: The leaf surface is NOT glossy.
Elliptic: Leaf tapered evenly at each end and broadest in the middle, can be rounded or pointed at end.
Emarginate: A shallow "notch" at the leaf tip.  Much like a wide shaped heart.
Falcate: Leaf is sickle shaped. Like a very long, narrow "C".
Glaucous: Refers to a white, waxy substance that can usually be rubbed off.  May be on the leaves, nuts or stems.  Also refers to bluish gray color.
Glossy: Refers to a leaf surface being shiny.
Lanceolate: Shaped like a lance, pointed on the end.
Linear: Very narrow, the sides are parallel or slightly curved, usually about 12 times longer than wide.
Mucronate: Ending in a short point.
Narrow lanceolate: Leaf is long and thin, about 8 times longer than wide, finely pointed at tip.
Oblique: The two halves of the leaf blade meet at different points on the stem.
Obovate: The reverse of ovate, broader near the apex.
Obvoid: Egg-shaped with the larger cross-section towards the apex.
Orbicular: Rounded leaf, almost like a circle.
Ovate: Refers to a shape of a leaf, egg-shaped and widest near the base of the leaf, pointed at the end.
Peltate: The petiole (leaf stem) is attached to the "underside" of the leaf. (Corymbia citriodora)
Petiolate: With a leaf stalk.
Reticulation: Refers to the pattern of the leaf veins, may be dense or sparse.
Sessile: Without a leaf stalk.
Undulate: Having a wavy surface.

Lignotuber: A mass of vegetative buds that contain food reserves, often found on Mallee types that enable the species to send up new shoots.  They are

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