References
Bassett, I.J. 1967. Taxonomy of Plantago L. in North America: sections Holopsyllium Pilger, Palaeopsyllium Pilger, and Lamprosantha Decne. Can. J. Bot. 45: 565-577. Google Scholar
Bassett, I.J. 1967. Taxonomy of Plantago L. in North America: sections Holopsyllium Pilger, Palaeopsyllium Pilger, and Lamprosantha Decne. Can. J. Bot. 45: 565-577. Google Scholar