Portulaca oleracea
The most common species of this genus is "Melanthera biflora", found in the coastal areas and islands of the tropical belt of the Indo-Pacific region. Together with "Portulaca oleracea", "Ipomoea pes-caprae" and "Digitaria ciliaris", "Melanthera biflora" is usually one of the first species colonizing degraded or altered environments in tropical zones of the planet.