This week I'm going with....Australian native flora.
Sturt's Desert Pea was adopted as the floral emblem of South Australia on 23 November 1961.
This species, a member of the pea family, Fabaceae, is confined to Australia, where it occurs in all mainland States except Victoria. The original collection was made in 1699 by William Dampier on Rosemary Island in the Dampier Archipelago where he collected a specimen from:
"a creeping vine that runs along the ground ... and the blossom like a bean blossom, but much larger and of a deep red colour looking very beautiful".