Let me repeat that Purslane is not the name of a genus. Nothing will be listed under Purslane in our database, except as a common name.
If some of the images in the Portulaca grandiflora entry are actually pictures of Portulaca umbraticola, please propose that the images be moved to that entry. You cannot change the name of the entry to the name of another existing entry. If some of the images in the Portulaca oleracea (not orelacea) entry belong somewhere else, please propose that the images be moved to the correct entry. This is the only way to correct the errors.