titan arum

First attested in the 20th century.

titan arum (plural titan arums)

1. Amorphophallus titanum, an aroid native to Sumatra
   • 1962, “A Titan Arum Flowers”, in The American Horticultural Magazine, volume 41, page 45:

     In April of 1961 Longwood Gardens was able to display for the first time in its greenhouses a flowering specimen of Amorphophallus titanum, the titan arum of Sumatra, often billed incorrectly as "the largest flower in the world."