| Argentina | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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 | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Argentina | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Australia | | | Sharp, D. & B. K. Simon | 2002 | AusGrass: Grasses of Australia. CD-ROM, Version 1.0 | | CD–ROM |
| Bolivia | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Bolivia | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Bolivia | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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 | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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 | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Brazil | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Brazil | | | Forzza, R. C. | 2010 | (none) | Lista de espécies Flora do Brasil | http://floradobrasil.jbrj.gov.br/2010 |
| Chile | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Chile | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Chile | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Colombia | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Colombia | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Ecuador | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Ecuador | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Ecuador | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Guatemala | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Guatemala | | | Davidse, G., M. Sousa Sánchez & A.O. Chater | 1994 | Alismataceae a Cyperaceae | Fl. Mesoamer. | 6: i–xvi, 1–543 |
| Guatemala | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Guatemala | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Mexico | | | Davidse, G., M. Sousa Sánchez & A.O. Chater | 1994 | Alismataceae a Cyperaceae | Fl. Mesoamer. | 6: i–xvi, 1–543 |
| Mexico | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Mexico | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Mexico | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Mexico | Veracruz | | Valdés-Reyna, J. & M. E. Barkworth | 2002 | Poaceae II. Pooideae: Tribu Stipeae | Fl. Veracruz | 127: 1–28 |
| Paraguay | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Paraguay | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Paraguay | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Peru | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Peru | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Peru | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| United States | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| United States | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| United States | | | USDA, NRCS | 2007 | The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge. | | |
| United States | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Uruguay | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Uruguay | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Uruguay | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |
| Venezuela | | | Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella | 2002 | Stipeae | Internet Cat. New World Grasses | ined. |
| Venezuela | | | Cialdella, A. M. | 2003 | Piptochaetium. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae | Contr. U.S. Natl. Herb. | 48: 495–504 |
| Venezuela | | | Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. N. 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: |