What kind of tree is green and covered in sharp, pointy spikes

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Found this very interesting tree in Nevis (W.I.) covered in huge

Grass Tree (xanthorrhoea or black boy) shows its sharp, pointy

What are some flowering trees that bloom red instead of pink like cherry blossoms do (or white or yellow)? What kind of tree is it called and where can we find them

European Chestnut Fruit Tree Covered Sharp Stock Photo 1509059333

What kind of smaller evergreen tree should I plant to have three different colors? - Quora

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10,069 Sharp Spiky Leaves Images, Stock Photos, 3D objects

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What kind of smaller evergreen tree should I plant to have three different colors? - Quora

Which tree called the queen of night? - Quora

Beech Tree: Description, Types, and Care Tips