Stipule
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In botany, a stipule is an outgrowth typically borne on both sides of the base of a leafstalk. They are primarily found among dicots and rare among monocots. Stipules are considered part of the anatom
Glandular stipule of Euphorbia pteroneura
Stipular spines on the mesquite tree (Prosopis pallida)
Fused together and leaf-like stipules of Alchemilla mollis
Leafy stipules at the base of a Rose leaf (Rosa canina)
Vachellia collinsii
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Vachellia collinsii, previously Acacia collinsii, is a species of flowering plant native to Central America and parts of Africa.
Vachellia collinsii Thorns (domatia)