Seetzenia lanata (Willd.) Bull.

Seetzenia lanata is an extremely rare perennial herb of the extreme desert. It is almost inconspicuus creeping plant. I found this year only one plant and managed to take pictures of the fruit (here) and the flower (will post in a few days).

and this is the very shy flower of this species

Seetzenia lanata is a creeping rare annual of the extreme desert.