Reinoso Franco, Juan, and Mª del Carmen Viera Benitez. “Marchesinia Mackaii (Hook.) S.Gray and Nowellia Curvifolia (Dicks.) Mitt. In the North-West Peninsular”. Acta Botanica Malacitana, vol. 23, Dec. 1998, pp. 227-8, https://doi.org/10.24310/abm.v23i0.8567.