Flores-Moya, A., Conde, F., & Izquierdo, J. L. (1993). Geographic distribution of Phyllariopsis purpurascens (C. Agardh) Henry & South and P. brevipes (C. Agardh) Henry & South in the Iberian Peninsula and Balearic Islands. Acta Botanica Malacitana, 18, 45–53. https://doi.org/10.24310/abm.v18i.8961