Pachystegia
ζPachystegia Cheeseman ζ was treated by Allan (1961) as a monotypic endemic genus. Molloy, B. P. J., in Connor, H. E. and Edgar, E., New Zealand J. Bot. 25 : 144-145 (1987), recognised 3 spp.
Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
