Purslane n. (Bot.) An annual plant (Portulaca oleracea), with fleshy, succulent, obovate leaves, sometimes used as a pot herb and for salads, garnishing, and pickling. Flowering purslane, or Great flowered purslane, the Portulaca grandiflora. See Portulaca.
Purslane tree, a South African shrub (Portulacaria Afra) with many small opposite fleshy obovate leaves.
Sea purslane, a seashore plant (Arenaria peploides) with crowded opposite fleshy leaves.
Water purslane, an aquatic plant (Ludwiqia palustris) but slightly resembling purslane.