Portulaca sclerocarpa of the Portulacaceae (purslane) family, a perennial herb with a fleshy tuberous taproot which becomes woody, has stems up to 20 cm (7.9 in) long. The stalkless, succulent, grayish-green leaves are almost circular in cross-section, 8 to 21 mm (0.3 to 0.8 in) long, and 1.5 to 2....