Grosse-Veldmann, B., Conn, B.J. and Weigend, M. 2016.

Weeding the nettles IV: A redefinition of Urtica incisa and allies in New Zealand and Australia, including the segregation of two new species Urtica sykesii and U. perconfusa

. Phytotaxa. 245, 4 (Feb. 2016), 251–261. DOI:https://doi.org/10.11646/phytotaxa.245.4.2.