althaea officinalis

Althaea officinalis, or marsh-mallow, is a perennial species indigenous to Europe, Western Asia, and North Africa, which is used in herbalism and as an ornamental plant. A confection made from the root since ancient Egyptian times evolved into today's marshmallow treat, but most modern marshmallow treats no longer contain any marsh-mallow root.

The stems, which die down in the autumn, typically grow 3 to 4 ft (0.91 to 1.22 m), but can reach 6.5 feet (2.0 m) and put out only a few lateral branches. ...