Desmodium incanum

About

Desmodium incanum, also known as creeping beggarweed, Spanish clover, Spanish tick-trefoil or hitchhikers is a perennial plant native to Central and South America. In Hawaiʻi it is known as kaʻimi or kaimi clover from the Hawaiian for "seeker". Initially introduced as forage crop around the world, it has spread to many places although it is no longer an important fodder crop. It is considered a weed both within and outside its native range. It has spread through Florida and across the southern USA into southern Texas and across many Pacific islands, including Hawaiʻi.

Summary from Wikipedia