Madeira vine

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A tropical South American ornamental vine (Anredera cordifolia) having small white fragrant flowers.

from The Century Dictionary.

• noun An elegant climbing herb with bright-green fleshy leaves, long clusters of small white spicy-fragrant flowers, and a perennial tuberous root. It is a chenopodiaceous plant, Boussingaultia baselloides, from the Andes.

from the GNU version of the Collaborative International Dictionary of English.

• (Bot.) A herbaceous climbing vine (Boussingaultia baselloides) very popular in cultivation, having shining entire leaves and racemes of small fragrant white flowers.