Mislim da je Etna isto što i Vulcano, barem po izgledu.
Etna star je izgledom između Vulcana i Cerifere no neznam jesu li baš tako križani.
U svakom slučaju na stranici piše da je ta varijacija primječena kod vulcanovog podmlatka:
"Over the years' 90, as they gathered the seeds from mother plants of Chamaerops Volcano, it was noticed a different plant from the others, with a large amount of silver and pointed leaves. The Vigo Marquis, then decided to separately sow the seeds of this plant. After about five years the plants have grown so dear, they are an explosion of leaves, silvery, pointed, nothing to do with the classic chamaerops humilis and very different from chamaerops volcano. So begins the selection of mother plants. Some male specimen is sold to customers who love the palm trees that they know well appreciate the novelty. And, little by little, the plants are ready to be introduced into the market."
