welwitschia(redirected from Tree tumbo)
Also found in: Thesaurus, Encyclopedia.
(Plants) a gymnosperm plant, Welwitschia mirabilis, of the Namib Desert in SW Africa, consisting of two large woody leaves lying on the ground with a conelike structure arising between them: phylum Gnetophyta
[C19: named after F. M. J. Welwitsch (1807–72), Portuguese botanist, born in Austria]
Switch to new thesaurus
|Noun||1.||welwitschia - curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old|
gymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovary