Thank you! I never noticed the flowers before this year but maybe I noticed the plant with its thin leaves.

Or Euphorbia corollata which seems more common.

It should be planted in Asia but they import a lot of trees. Also, it may not be tropical.

Definitely not any of the Buddha belly bamboo that I grow. B. tuldoides does not have bellies and is known as Punting Pole bamboo here. I strongly agree with Kudzu on the ID of Ph. aurea. There are countless groves of it down here in the wild and even mine has identical compacted nodes. A very common bamboo here, and it will not have the compressed nodes on all culms and the degree of compression varies also. Buddha Belly aka B. vulgaris 'Wamin' always bellies except on thin whipshoots or culms less than 1/2 inch thick. Another Buddha Belly aka B. ventricosa produces bellies when grown under stress or kept small, but never in an open grown specimen. I do know that identical clones of bamboo can grow completely differently in different parts of the country. Soil, sun, nutrients, warmth, soil type, amount of fertilizer, etc all play a large part in grove growth. You most likely have P. aurea. Kt