White Vine, Sarcostemma clausum, also called Twine Vine, is a Milkweed Vine that Soldier and Queen Butterflies use as their host plant. If you plant it in your butterfly garden, put it where it can't grow all over other plants that you love. I've found it growing in several places here in South East Florida, always by the water. Vines like this are great for hiding an old tree stump if you have one you've been meaning to remove someday. The hurricanes left me with several, and I'm enjoying them because I consider them a natural hurricane proof trellis for my White Vine Milkweed, Passion Vines, and Virginia Creeper.

This Soldier Butterfly is a fast bug. I tried for a long time to get a better photo of it on the White Vine, but it kept moving, and the White Vine it was sipping nectar from was growing on the steep edge of a canal, so I couldn't follow it most of the time.

The vine grew over everything around it, but since most of those plants were invasive Brazilian Pepper, in this instance that growth habit is a good thing.