Kumar, Pankaj, Stephan W. Gale, Alexander Kocyan, Gunter A. Fischer, Leonid Averyanov, Renata Borosova, Avishek Bhattacharjee, Ji-Hong Li, and Kuen Shum Pang. 2014. “ With Notes on Allied Taxa in Section Microphyllae Found in the Region”. Phytotaxa 164 (2):91–103. https://doi.org/10.11646/phytotaxa.164.2.3.