2015. Didymodon rigidulus var. subulatus (Thér. & Bartram ex E.B. Bartram) R.H. Zander, new to the moss flora of Mongolia and Asia. Bangladesh Journal of Plant Taxonomy. 22, 1 (Jun. 2015), 63–66. DOI:https://doi.org/10.3329/bjpt.v22i1.23871.