"A leaf of Acacia. A, as seen by day; B, the same leaf asleep at night." -Bergen, 1896
An American beech leaf.
A leaf from an American elm tree.
"Leaf of apple, with stipules." -Bergen, 1896
A black birch leaf.
A black walnut leaf.
"Xerophytic leaves of the Australian blackberry. l, leaflets reduced in many cases to bare midrobs,…
A buckeye leaf.
"Palmately divided leaf of buttercup." -Bergen, 1896
A butternut leaf.
"Parallel veining in Canna. Veins running from midrib to margin." -Bergen, 1896
A catalpa leaf.
"Pinnately divided leaf of Celandine. The blade of the leaf is discontinuous, consisting of several…
"A leaf of red clover. At the left, leaf by day; at the right, the same leaf asleep at night." -Bergen,…
This shows a conduplicate leaf.
This shows a convolute leaf.
"Opposite leaves of Deutzia, as arranged on a horizontal branch." -Bergen, 1896
"Opposite leaves of Deutzia, as arranged on a vertical branch." -Bergen, 1896
The image shows how endogens grow threw elongation internally. "Endogenous leaf, showing its parallel…
"Fascicles.--When leaves or flowers grow more than two together they are said to be fasciculated, or…
A leaf from a gumwood tree.
A hickory leaf.
A honey locust leaf.
A horse-chestnut leaf.
This shows an inflexed leaf.
"Infundibuliformis.--Funnel form." -Newman, 1850
This shows an involute leaf.
This shows an lanceolate leaf.
This shows an obovate leaf.
"A, Shapes of bases of leaves; B, Peltate leaf of Tropaeolum. 1, heart-shaped; 2, arrow-shaped; 3, halberd-shaped."…
"Shapes of margins of leaves. a (1), finely serrate; (2), coarsely serrate; (3), doubly serrate. b (1),…
"General outline of leaves. a, linear; b, lanceolate; c, wedge-shaped; d, spatulate; e, ovate; f, obovate;…
"Tips of leaves. a, acuminate or taper-pointed; b, acute; c, obtuse; d, truncate; e, retuse; f, emarginate…
An acerose, or needle-shaped leaf.
An arrow-shaped leaf.
This is an example of an awl-shaped leaf.
"Binate.--With two leaflets." -Newman, 1850
"Bipinnate.--Double rows of leaflets." -Newman, 1850
"Bipinnatifid.--Twice pinnatifid." -Newman, 1850
A clasping leaf around a stem.
This is an example of a decompound leaf structure, meaning it is divided three or four times.
"Crenae.--Notches, or round teeth, bordering a leaf or the petals of a flower." -Newman, 1850
"A, Runcinate leaf of dandelion." -Bergen, 1896
"Decurrent.--When leaves run down the stem to a point considerably below the place where they diverge…
"Digitate.--Having the form of an open hand." -Newman, 1850
"Elliptic.--Nearly oval, but of equal breadth at each end." -Newman, 1850
A fiddle-shaped leaf.
A gingko leaf.
"Hastate.--Formed like the head of an ancient halbert." -Newman, 1850
A hastate leaf that is triangular in shape with basal lobes.
"Imbricate.--When leaves are laid one over another, like tiles on a roof, they are said to be imbricated."…
A kidney-shaped leaf.
"Lanceolate.--Lance or spear-shaped, as in tulipa sylvestris." -Newman, 1850
"Linear.--Narrow, with parallel sides, as in most grasses." -Newman, 1850
A lion toothed leaf.
A lobed leaf.
"Lyrate.--Lyre-shaped: cut into many transverse segments, becoming larger towards the extremity of the…
"Lyrate leaf." -Bergen, 1896
"Mucronate.--Sharply pointed." -Newman, 1850
This is an example of a needle-shaped leaf of the Larch.