SHOOT SPINE

Shoot spine: a spine is a modified stem and leaves. [Generally synonymous with stem spine, as are all of these examples]

Examples:

1. Scutia spicata from the Galapagos Archipelago
2. A lateral shoot of Poncirus trifoliata here becomes a determinate spine structure; another view
3. A spine forms as a determinate lateral shoot in kei apple, Dovyalis caffra

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