Most cactus spines are fairly straight, but the fishhook barrel cactus has spines curved into a fishhook shape (I don't mean barbs). Are there any good ideas why that shape evolved?

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Cactus spines are modified leaves. What is their purpose? - Quora

Barbed Barrel, January, February 2022

Cactus spines are modified leaves. What is their purpose? - Quora

fishhook barrel cactus (Cactus of Metro Phoenix (April 2021

Most cactus spines are fairly straight, but the fishhook barrel

Barbed Barrel, January, February 2022

fishhook barrel cactus (Cactus of Metro Phoenix (April 2021

Most cactus spines are fairly straight, but the fishhook barrel

Seed of the Week: Barrel Cactus – Growing With Science Blog

Is a cactus a halophyte? - Quora

Did you ever touch a cactus? - Quora

Is a cactus a halophyte? - Quora

FISHHOOKS AND PINCUSHIONS

Why has this cactus plant got curly spines? Is there any clue as