PPG I. A community-derived classification for extant lycophytes and ferns. Journal of Systematics and Evolution. 2016, 54 (6): 563–603. S2CID 39980610. doi:10.1111/jse.12229.
PPG I. A community-derived classification for extant lycophytes and ferns. Journal of Systematics and Evolution. 2016, 54 (6): 563–603. S2CID 39980610. doi:10.1111/jse.12229.