Image 1. 24-04-2011 I first saw this plant in a fast drying up water hole. ( see existing thread Plants and a water hole
I wasn't sure if the two different colour heads here were the same plant or not.
Image 2. 05-05-2011 the first seeds were forming. You can see the flowers are in two colours.
Image 3. 11-05-2011 there was a mass of seeds everywhere (and look how much the grass has grown!).
There was no surface water to be seen, just a a bit spongy and damp.
I haven't a clue about this, can anyone help with a name?