Welwitschia is one of three genera in the gymnosperm group of seed plants known as Gnetales, whose relationship to other plants has long been a subject of controversy among botanists and evolutionary biologists. Welwitschia includes just a single species, W. mirabilis.
(McCoy et al. 2008)
This article is unpublished.
Appears under "Systematics or Phylogenetics"
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© Leo Shapiro
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