portulaca
noun
por·tu·laca ˌpȯr-chə-ˈla-kə 
: any of a genus (Portulaca) of chiefly tropical succulent herbs of the purslane family
especially : a widely cultivated South American plant (P. grandiflora) with showy flowers and small conical leaves
Example Sentences
Recent Examples on the Web Flowers to start from seed: Dahlia, shizanthus, nigella, phlox, portulaca, nemisa, marigold and nasturtiums. 
Jeff Lowenfels, Anchorage Daily News, 16 Apr. 2020 Among the ingredients, portulaca pilosa extract and palmitoyl tripeptide-38 help to reduce fine lines and wrinkles and protect from environmental stressors. Alix Strauss, New York Times, 4 June 2019 Flowers to start from seed: Dahlia, schizanthus, nigella, phlox, portulaca, nemesia, marigold and nasturtiums. Jeff Lowenfels, Anchorage Daily News, 19 Apr. 2018
Jeff Lowenfels, Anchorage Daily News, 16 Apr. 2020 Among the ingredients, portulaca pilosa extract and palmitoyl tripeptide-38 help to reduce fine lines and wrinkles and protect from environmental stressors. Alix Strauss, New York Times, 4 June 2019 Flowers to start from seed: Dahlia, schizanthus, nigella, phlox, portulaca, nemesia, marigold and nasturtiums. Jeff Lowenfels, Anchorage Daily News, 19 Apr. 2018 Word History
Etymology
New Latin, from Latin, purslane, from portula, diminutive of porta gate; from the lid of its capsule — more at port
First Known Use
14th century, in the meaning defined above