Geocarpon minimum

About

Geocarpon minimum is a species of flowering plant in the carnation family (Caryophyllaceae) which is known by the common names tinytim and earth-fruit. It is a rare plant known from about 34 populations in the US states of Arkansas, Louisiana, Missouri, Texas, and Oklahoma. There are a number of threats to its survival and it was listed as a threatened species of the United States in 1987.

Summary from Wikipedia