Spines of blackberries adhere to multiple substrates by having a sharp, backward-pointed structure.

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"One of the most mobile of plants…is the blackberry. An individual, once established, immediately starts to seek new territory for itself. It puts out exploratory stems…They begin to advance directly and purposefully…Each stem is armed with sharp backward-pointing spines which catch on the ground and snag on vegetation. They clamber over logs and up the faces of rocks. They reach up, hook onto the stems of other plants and scramble over them, overwhelming them." (Attenborough 1995:11)

Book
The Private Life of PlantsBBC BooksAugust 21, 1995
David Attenborough

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