Template:Heenan et al., 2008
- Heenan, P.B., Knox, E.B., Courtney, S.P., Johnson, P.N. & Dawson, M.I.. 2008: Generic placement in Lobelia and revised taxonomy for New Zealand species previously in Hypsela and Isotoma (Lobeliaceae). New Zealand Journal of Botany 46(1): 87–100. DOI: 10.1080/00288250809509756