Iris tectorum Alba Olea Ranga Agriculture University as a

Ranga Agriculture University as a food crop where it is known by the moniker Elephant foot yam

and would be only considered edible if you were starving on an abandoned island

which are also highly prized by all kinds of bees

As a garden designer

For those who like this kind of thing

Iris tectorum Alba Olea Ranga Agriculture University as aIris tectorum 'Alba' is a prized selection of the Chinese roof iris. No, it's not from Japan despite rumors to that effect and a poorly chosen common name. The slowly spreading semi deciduous patch is composed of wide light green foliage. Starting often in mid March and continuing well into May in NC, the easy to grow clumps are topped with frilly white flowers held above the foliage. Iris tectorum 'Alba' thrives both in dry shade and on damp roofs