Portulaca

1. Leaves linear (scarcely 2 mm broad), nearly terete; stems with conspicuous tufts of long dense hairs at the nodes; flowers at least 2 cm broad, variously colored.

P. grandiflora

1. Leaves spatulate to obovate, flat; stems glabrous or with a few short hairs at nodes; flowers not over 1 cm wide, yellow.

P. oleracea