C.  Shouliang, Dezhu, L., Guanghua, Z., Zhenlan, W., Shenglian, L., Liang, L., Zhengping, W., Bixing, S., Zhengde, Z., Nianhe, X., Liangzhi, J., Zhenhua, G., Wenli, C., Xiang, C., Guangyao, Y., Phillips, S. M., Stapleton, C., Soreng, R. J., Aiken, S. G., Tsvelev, N. T., Peterson, P. M., Renvoize, S. A., Olonova, M. V., and Ammann, K. H., ?Poaceae?, Flora of China, vol. 22, pp. 1 - 653, 2006.

K.  Romaschenko, Peterson, P. M., Soreng, R. J., Futorna, O., and Susanna, A., ?Phylogenetics of Piptatherum s.l. (Poaceae: Stipeae): evidence for a new genus, Piptatheropsis, and resurrection of Patis?, Taxon, vol. 60, no. 6, pp. 1703 - 1716, 2011.

R. J.  Soreng, Davis, J. I., and Voionmaa, M. A., ?A phylogenetic analysis of Poaceae, tribe Poeae sensu lato based on morphological characters and sequence data from three plastid-encoded genes: evidence for reticulation, and a new classification for the tribe?, Kew Bull, vol. 62, no. 3, pp. 425 - 454, 2007.

R. J.  Soreng, Peterson, P. M., Davidse, G., Judziewicz, E. J., Zuloaga, F., Filgueiras, T. S., Morrone, O., Zuloaga, F. O., and Judziewicz, E., ?Catalogue of New World Grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S?, Nat. Herb, vol. 46, pp. 1 - 662, 2003.