Barra do Garças - Xavantina road, 10 km. south of Xavantina. Damp sandy ground in dense campo cerrado - grass. Central Brazilian Plateau. States of Goiás and Mato Grosso. Field excursion to the Serra do Roncador with the Royal Society/Royal Geographical Society Reconnaissance Expedition to Mid-West Brazil, 1966., Mato Grosso, Brazil, South America - Neotropics