Welwitschia mirabilis
- Description of this dioecious perennial plant of southwest Africa, often described as "unlike any known plant on earth."
- http://www.conifers.org/we/

Conservation of Welwitschia mirabilis
- Brief description of the plant and challenges of cultivation, with an old botanical plate illustrating the plant's morphology.
- http://www.smith.edu/garden/Academics/acadwelwit.html