Annual herb to 80 cm high, multi-stemmed, each stem generally unbranched. Leaves alternate, loosely clustered near the top of flowering stems but not arranged in a whorl-head; blades on stems ovate, up to 120 mm long, and 60 mm wide; floral head umbel with 5 rays, generally unforked. Cyathia 2-2.5 mm wide; glands 1, funnel-shaped, red-rimmed.

Mexico, USA, S America.

Source: Forster, P. (2002). Euphorbiaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.