1. Anatomy and ultrastructure of the floral nectary in Peganum harmala L. (Nitrariaceae);Abedini;Plant Spec. Biol.,2013
2. Los nectarios florales en leguminosas-mimosóideas;Ancibor;Darwiniana,1969
3. The Natural History of Plants;Baillon,1880
4. Morphological studies in the Celastraceae;Berkeley;J. Elisha Mitchell Sci. Soc.,1953
5. A systematic survey of floral nectaries;Bernardello,2007