Isotoma
ζIsotoma Lindley ζ is represented by 1 sp. in N.Z. The differences between Isotoma and the related genera Hypsela C. Presl and Solenopsis are discussed by Melville, R., Kew Bull. 14: 277-279 (1960).
Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
