Melocactus pachyacanthus subsp. viridis N.P.Taylor in Bradleya 9: 40–41. 1991.

Nomenclatural References

• literature : Taylor, N. P. (1991). The genus Melocactus (Cactaceae) in Central and South America. Bradleya, 9(9), 1–80. https://doi.org/10.25223/brad.n9.1991.a1 DOI link imported from Page, R. (2023). doi:10.5281/zenodo.7974720
• person : Nigel Paul Taylor (b.1956) Based on occurrence of standard abbreviation 'N.P.Taylor' in the authors string.