In 2010, Sachin A. Punekar and P. Lakshminarasimhan published the new species S. darwinii from Western Ghats of Karnataka, India. They placed it in subgenus Andersonia and mentioned it was closely allied with S. kunthii, S. inconspicuum, and S. tenellum, but they did not place it within a section. Also in 2010, botanist A. R. Bean described three new Australian species from the Northern Territory (S. exiguum, S. notabile, and S. osculum) that belong to subgenus Andersonia, but he did not place them within a section.