Ravenala n. : A genus of plants related to the banana.

Example:
What size/diameter can the roots of a traveler's palm ( scientific name: Ravenala madagascariensis) reach. ?

Taxonomy
Ravenala madagascariensis, palm, trunk, Travelers, Foliage, unranked, plant, free encyclopedia, Travellers palm, species, traveller's palm, family, Physical appearance, genus Strelitzia, banana plant, bird-of-paradise, stems, paddle.

Defination from the web:
Ravenala madagascariensis. Sonnerat. Ravenala madagascariensis, commonly known as Traveller's Tree or Traveller's Palm, is a species ... Ravenala madagascariensis is the sole member of its genus, and is closely related to the southern African genus Strelitzia and the South American ...