X-Large Salvinia. (Salvinia oblongifolia). The X-Large Salvinia is a very interesting plant which floats on the surface of the water and is larger in size than the Salvinia. It has dainty "roots" that dangle into the water which are excellent for spawning of fish. Each segment grows about 3 quarters of an inch long and remains in clusters adding a wonderful colorful addition to any pool. A very excellent grower that is rather rare and will add a special look to the water garden pool. Per portion. Prohibited in TX,FL.