thalia

From the genus name.

thalia (plural thalias)

1. (botany) Any of the genus Thalia of tropical plants found in aquatic or marshy habitats.
   • 1982, Thomas H. Everett, The New York Botanical Garden Illustrated Encyclopedia of Horticulture:

     Thalias are herbaceous perennials with long-stalked, calathea- or canna-like, all-basal leaves, the stalks of which enfold each other toward their bases to produce false stems.

• hiatal, thaali