Of the 4 types I am growing ATM, one is a cutting of Dr. David Fairchild's chaya that he grew at The Kampong in Miami's Coconut Grove. The other notable one is from Larry Schokman, I am unaware of where this one came from. The Dr. Fairchild specimen came from Cuba according to my research. It came via the Guthrie family members of The Rare Fruit Council Int'l. (RFCI), Maimi. The 3rd was given to me by a friend in the (SFPS), and the 4th came from our yard. 2 of the 4 have stinging nettles.