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Houseplants
Cacti and Succulents
Stock photo of cactus spines / thorns, prickly green barrel cacti houseplant
Stock Images / Photos of Cacti and Succulents (Houseplants)
Royalty Free Images - Filename: green_cactus_thorns_1.jpg
Whatever they are, they are certainly sharp and painful if you don't handle this cactus carefully.
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