I thought these were Consolea rubescens, but they might be some other Consolea - CactiGuide.com
Consolea falcata | The Cactus King
Araflora, exotic flora & more - Roadkill cactus
Caribbean Tree Cactus Opuntia Consolea Falcata Opuntia - Etsy Norway
Consolea rubescens (Road Kill Cactus) - World of Succulents
File:Tree Opuntia (Consolea falcata), almost extinct in the wild with around 10 specimen left in a single locality of the North-western coast of Haiti ... (34913704844).jpg - Wikimedia Commons
Consolea - Wikipedia
Consolea rubescens - Roadkill Cactus | MCG™
Opuntia Consolea rubescens Live Cactus Plant - Etsy