Some fair size and other small. It used to be thought there were several species due to the size differences but that has been proven to be only the natural variation of the plant. I cover the topic in the article below.
If you haven't read this I'll bet you'll find it interesting. Everything in my article is based on information in the scientific text The Genera of Araceae as well as conversations with several aroid botanists that have worked with this plant. Some of the things growers believe are nothing more than fiction.
http://www.exoticrainforest.co...
Steve