Fischer, E., Killmann, D., Ackermann, M. and Yeshitela, K. (2023) “Pilularia ethiopica (Pteridophyta, Marsileaceae), a new species of pillwort from the tropical African mountains of Ethiopia”, Phytotaxa. Auckland, New Zealand, 612(1), pp. 77–86. doi: 10.11646/phytotaxa.612.1.6.