| Argentina | | | Caro, J. A. | 1969 | Aristida. In A. Burkart, Gramineas | Fl. Il. Entre Ríos | 2: 208–224 |
| Argentina | | | Davidse, G., H. M. Longhi-Wagner & S. Lægaard | 2003 | Aristida | Catalogue of New World Grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae, Contr. U.S. Natl. Herb. | 46: 69–104 |
| Argentina | | | SPECIMEN BASED RECORD | | Published protolog data | | |
| Argentina | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone | 2003 and onwards | On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48 | Internet Cat. New World Grasses | http://www.tropicos.org/Project/CNWG: |
| Argentina | Entre Ríos | | Caro, J. A. | 1969 | Aristida. In A. Burkart, Gramineas | Fl. Il. Entre Ríos | 2: 208–224 |
| Argentina | Entre Ríos | | Longhi-Wagner, H. M. | 1999 | O gênero Aristida (Poaceae) no Brasil | Bol. Inst. Bot. (São Paulo) | 12: 113–179 |
| Brazil | | | Longhi-Wagner, H. M. | 1990 | Diversidade e distribuição geográfica das espécies de Aristida L. (Gramineae) ocorrentes no Brasil | Acta Bot. Brasil. | 4(1): 105–124 |
| Brazil | | | Davidse, G., H. M. Longhi-Wagner & S. Lægaard | 2003 | Aristida | Catalogue of New World Grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae, Contr. U.S. Natl. Herb. | 46: 69–104 |
| Brazil | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone | 2003 and onwards | On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48 | Internet Cat. New World Grasses | http://www.tropicos.org/Project/CNWG: |
| Brazil | | | Forzza, R. C. | 2010 | (none) | Lista de espécies Flora do Brasil | http://floradobrasil.jbrj.gov.br/2010 |
| Brazil | Rio Grande do Sul | | Longhi-Wagner, H. M. | 1999 | O gênero Aristida (Poaceae) no Brasil | Bol. Inst. Bot. (São Paulo) | 12: 113–179 |
| Paraguay | | | Longhi-Wagner, H. M. | 1999 | O gênero Aristida (Poaceae) no Brasil | Bol. Inst. Bot. (São Paulo) | 12: 113–179 |
| Paraguay | | | Longhi-Wagner, H. M. | 1998 | Clave ilustrada de las especies de Aristida L. (Gramineae-Aristideae) del Paraguay | Candollea | 53(2): 466–470 |
| Paraguay | | | Davidse, G., H. M. Longhi-Wagner & S. Lægaard | 2003 | Aristida | Catalogue of New World Grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae, Contr. U.S. Natl. Herb. | 46: 69–104 |
| Paraguay | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone | 2003 and onwards | On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48 | Internet Cat. New World Grasses | http://www.tropicos.org/Project/CNWG: |