| Noun | 1. | genus Portulaca - genus of mainly tropical fleshy or trailing herbs caryophylloid dicot genus - genus of relatively early dicotyledonous plants including mostly flowers family Portulacaceae, Portulacaceae, purslane family - family of usually succulent herbs; cosmopolitan in distribution especially in Americas portulaca - a plant of the genus Portulaca having pink or red or purple or white ephemeral flowers common purslane, Portulaca oleracea, pussley, pussly, verdolagas - weedy trailing mat-forming herb with bright yellow flowers cultivated for its edible mildly acid leaves eaten raw or cooked especially in Indian and Greek and Middle Eastern cuisine; cosmopolitan |