Euphorbia prostrata – The Umbrella-Shaped Sand Mat Euphorbia prostrata, commonly known as Sand Mat, is a small, creeping herb found along pathways, in gardens and open spaces. Its green stems spread outwards from the centre, forming an attractive umbrella-like shape. The branches bear tiny opposite leaves and minute greenish flowers. It has a taproot system with smaller lateral roots. Traditionally, it has been used in folk medicine for certain skin and digestive complaints, although its milky latex can irritate the skin. Its spreading growth covers bare ground and helps protect the soil surface. Observing this humble plant encourages students to appreciate biodiversity and discover the hidden value of common weeds.