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
All species found in Portulaca
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 20, 2019. https://michiganflora.net/genus.aspx?id=Portulaca.