Zhou, X.-M., Jiang, L.-J., Zhang, L., Gao, X.-F., He, Z.-R. and Zhang, L.-B. 2015. Spore morphology of Selaginella (Selaginellaceae) from China and its systematic significance. Phytotaxa. 237, 1 (Dec. 2015), 1–67. DOI:https://doi.org/10.11646/phytotaxa.237.1.1.