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Botanical Terminology Tutorial
Leaf Arrangement
Leaf Shape
Leaf Margin
Leaf Apex
Leaf Base
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Alphabetical w/ Definitions

  1. Lamina
    The expanded portion of a leaf or petal; Refers to individual leaves (See also Blades).

  2. Lanceolate
    Longer than wide with widest point below the middle tapering to both the apex and base. Narrower than ovate.

  3. Leaf Scar
    Scar left behind on a stem after a leaf falls off (See also Abscission).

  4. Leaf Sheath
    A covering or small stipule that covers part of a leaf.

  5. Lenticel
    A small corky protrusion that allows for gaseous exchange between the air and the plant tissues.

  6. Linear
    Long and thin like a line with parallel sides; length is more than 4 times the width (See also Oblong).

  7. Lobed
    Rounded division or segment of a leaf or other organ. Can be symmetrical or asymmetrical and vary in sizes depending on species. Lobes are cut less than half way to the base or midvein.

  8. Lobulate
    Small rounded lobes around leaf edges (See also Lobed).

  9. Low Spreading
    A broad plant habit that hugs the ground (See also Prostrate).

  10. Lustrous
    Shiny or glossy.

Tutorial Terms

Leaf Apex

Leaf Arrangement

Leaf Base

Leaf Margin

Leaf Shape



2005 Gary J. Kling, Laura L. Hayden, and Joshua J. Potts University of Illinois at Urbana-Champaign.
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Notes about this tutorial.