What exactly is this mushroom coral called? How big and what exactly do these look like when larger? I see so many different types online it confuses me. Thanks in advance
It looks like a green Rhodactis (perhaps R. inchoata). They get 3-4” in diameter at the largest. IME they don’t grow/spread as quickly as Discosoma species or Ricordea yumas, but they still grow fairly quickly. Overall pretty easy to take care of.