You are referring to the state line district for local Diamonds right? Includes Colorado as well!
The plant they are referring to grows in West Africa, haven't heard of it growing in Wyoming or Colorado though.
Here is a quote from the
Mining.com article......
QUOTE
The plant, identified as Pandanus candelabrum, could become a simple and efficient tool for diamond hunters in West Africa to uncovering potentially rich precious gems and semi-precious gemstones deposits, the paper claims.