Pollen morphology of the three subgenera of DOI: info:10.1080/01916122.2012.657876v. 36No. 1Taylor & Francis131–151
Leopold, Estella B., Birkebak, Joshua, Reinink-Smith, Linda, Jayachandar, Anitha P., Narváez, Paula, and Zaborac-Reed, Stephanie. 2012. "Pollen morphology of the three subgenera of Alnus." Palynology, 36, (1) 131–151. https://doi.org/10.1080/01916122.2012.657876.