Poinsettia

Poinsettia [Euphorbiaceae] Euphorbia Pulcherrima 
https://500px.com/photo/187886377/poinsettia-圣诞红-by-cyy-4993?ctx_page=1&from=user&user_id=1388467
https://www.flickr.com/photos/cyy4993/30772334844/in/dateposted-public/