Template:Hassemer et al., 2015
- Hassemer, G., Trevisan, R., Meudt, H. & Rønsted, N. 2015. Taxonomic novelties in Plantago section Virginica (Plantaginaceae) and an updated identification key. Phytotaxa 221(3): 226-246. DOI: 10.11646/phytotaxa.221.3.2 PDF