- 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
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Examples from the Web for welwitschia
I am plodding away at Welwitschia by night and Genera Plantarum by day.More Letters of Charles Darwin
In Welwitschia also the megaspore is filled with prothallus-tissue, but single egg-cells take the place of archegonia.