First published in Bot. Mag. (Tokyo) 19: 87 (1905)
- Sabirova, N.D. & Sabirov, R.N. (2011). New and rare vascular plant species of Northern Sakhalin Byulleten' Glavnogo Botaniceskogo Sada 197: 80-86.
Not accepted by
- Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST. [Cited as Viola biflora.]
Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
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