Woodland false buttonweed

Spermacoce remota, the woodland false buttonweed, is a species of plant in the Rubiaceae. It is native to the southeastern United States (Texas, Florida, Georgia, Alabama), West Indies (Bermuda, Bahamas, Hispaniola, Puerto Rico, the Cayman Islands, Trinidad, Lesser Antilles, etc.), Mexico, Central America and South America. It is naturalized in Taiwan, Southeast Asia (Thailand, Vietnam, Malaysia, Indonesia), China (Guangdong), India, Sri Lanka, New Guinea, Mauritius and many other oceanic islands (including Hawaii and the Galápagos).