My source of information was incorrect, apparently the Stylophorum diphyllum is the one I want (furry, hanging seed pod).

We are delighted beyond words with our Kaymed mattress. We took a very expensive route to get to it. We spent just shy of $7,000 on Tempur-Pedic mattresses and adjustable frames. We were disappointed beyond words. They were replaced once because the indentation was so deep and wouldn't recover. They were hot and smelly. I went back to the store where we purchased the TP mattresses and the worked with us to get them resold since it was past the 90 day return period. I went around the store and tried out the Kaymed bed. I was very sure the one model that was all Talalay latex and was quite firm was the model we wanted. I wanted absolutely nothing to do with memory foam ever again. No chemicals from a man made foam. We've now had our Kaymed mattresses for 6 months and we couldn't be happier. There are no indentations and we even use them on the adjustable frames. They return to their original shape immediately. They aren't hot like the memory foam. The have no smell like the memory foam. We are absolutely satisfied beyond words with Kaymed. They are worth waiting for and it really isn't that long. They are worth the cost which is more than we can say for the TP mattresses. KAYMED mattresses are superb.

There are some videos and also some links on the page shown below. https://www.google.com/search? q=NEVER+FEAR+brand+fabric&rlz=1C1GCEA_enUS913US913&oq=NEVER+FEAR+brand+fabric&aqs=chrome..69i57j69i60&sourceid=chrome&ie=UTF-8

What did you end up getting? I'm in the same place with 48", price, and dual fuel