There is a forum specifically intended for that purpose - Name That Plant. It is one of th most active forums on GW and folks there are incredibly experienced and talented and there are very few plants from just about anywhere on the planet that cannot be identified. You can do multiple plants per post but it is best to limit it to around 4 or 5. Be sure you include a clear shot of the plant overall as well as close ups or details of leaves and any twigs, buds or flowers that may be significant for identification. And tell them your current location.

Thank you. I just posted a picture of what I'm hoping is an avocado tree.