United States, Arkansas, Baxter, Seventh-day Adventist Church; 3.3 mi. W. of the Mountain Home post office on US 62/412.
Covering about 4 square feet of sunny lawn. Calyx 3-4 mm long; flowers with 2 stamens, no petals; seeds 0.7-0.8 mm in diameter, the tubercles sharp or sharpish.