STIPULAR SPINE

Stipular spine: a spine is a sharp, modified stipule or stipel.

Examples:

1. Flowering quince, Chaenomeles
2. A climbing araliad, Eleutherococcus trifoliatus
3. Legumes with solid stipular spines: example 1, Erythrina, another example
4. Stipular spines on stem succulent euphorbs; another example and a view with leaves present
5. A bullthorn acacia; another Mexican bullthorn acacia

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