Caustic Weed; Flat Spurge, Caustic Creeper, Creeping Caustic, Mat-spurge; Milkweed
Annual or short lived perennial forb, prostrate to ascending, stems mostly to 0.2m long.. Leaves opposite each other, 0.2-1cm long, 1.5-5mm wide, flat, hairless, edges entire or minutely toothed near the tip. Male and female flowers on the same plant. Flowers small, green to red with pink or white, with 0 petals, in small heads that look like a single flower, each head composed of several male flowers surrounding 1 female flower, at the bases of the leaves. Chamaesyce drummondii in NSW.
Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales pages 455-456
PlantNET description (as Chamaesyce drummondii): http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Chamaesyce~drummondii