1) Australian clover fern 2) Clover fern 3) Common nardoo 4) Marsilea drummondii 5) Nardo 6) Pepperwort 1) Nardo 
• (n.) An Australian name for Marsilea Drummondii, a four-leaved cryptogamous plant, sometimes used for food. • (n.) An Australian name for Marsilea Drummondii, a four-leaved cryptogamous plant, sometimes used for food.
Nar·doo' noun (Botany) An Australian name for Marsilea Drummondii , a four-leaved cryptogamous plant, sometimes used for food. 
The nardoo (Marsilea macropus) is a pseudo-fern growing mostly in swampy ground, with a creeping rhizome and erect fronds, circinate when young. The spores and spore-cases are pounded and made into bread or porridge by the Aborigines of Australia.
[n] - Australian clover fern
nardo noun Australian clover fern