In addition to the 2 new spp described recently, other material is not currently placed and may represent additional new spp. This includes:
1. Perrier de la Bâthie 10366, from the Antanimena Plateau (cited as the invalidly published S. undatum var. velutinum Perrier de la Bâthie, 1938);
2. Villiers et al. 4898 from Bemaraha;
3. Cours & Homolle 1974 from near Lac Alaotra.