''Xyris asperula '' is an uncommon South American species of flowering plants in the yellow-eyed-grass family. It has been found in Bolivia and also in the States of

Goiás Goiás () is a Brazilian state located in the Center-West region. Goiás borders the Federal District and the states of (from north clockwise) Tocantins, Bahia, Minas Gerais, Mato Grosso do Sul and Mato Grosso. The state capital is Goiânia. ...

and

Minas Gerais Minas Gerais () is a state in Southeastern Brazil. It ranks as the second most populous, the third by gross domestic product (GDP), and the fourth largest by area in the country. The state's capital and largest city, Belo Horizonte (literally ...

in Brazil.Heimerl, Anton 1906. Annalen des Kaiserlich-Königlichen Naturhistorischen Hofmuseums 21: 69

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Photo of herbarium specimen at Missouri Botanical Garden, collected in Goiás in 1966

asperula ''Asperula'', commonly known as woodruff, is a genus of flowering plants in the family Rubiaceae. It contains 194 species and has a wide distribution area from Europe, northern Africa, temperate and subtropical Asia to Australasia. Species * ' ...

Plants described in 1841 Flora of Bolivia Flora of Brazil {{Poales-stub