For Grona
Ohashi H., and Ohashi K. 2018. Grona, a genus separated from Desmodium (Leguminosae tribe Desmodieae). J. Jpn. Bot. 93(2): 104-120.
Ohashi, K., H. Ohashi, T. Nemoto, C. Abe, H. Kotani, K. Nata, H. Ohtake, and K. Yamamoto. 2018. Phylogenetic analyses for classification of the Desmodium group of Leguminosae tribe Desmodieae 2. Two new genera separated from Desmodium and two new combinations in Grona and Sohmaea. J. Jpn. Bot. 93 (5): 293-306.