Stipule presence

The presence or absence of stipules, appendages (usually paired) that are developed at the base of a simple leaf. Stipules may be leaf-like, scale-like, wispy or spiny, from minute to large and conspicuous.

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Present beyond leaf expansion

Stipules are present at the base of mature (fully expanded) leaves. Stipules may be minute.

Caducous (present but early deciduous)

Stipules are present, but are readily deciduous, seldom persisting to mature leaf stage. Often, stipules are evident on new growth and/or a stipular scar may be present at the base of mature leaves.

Entirely absent

Stipules are not developed, or are so readily deciduous as to be effectively absent.