- V. Behiery, Beloved bloom; The tulip in Turkish art, Islamic Arts, 14 July 2017
- Moyroud, E., Wenzel, T., Middleton, R. et al. Disorder in convergent floral nanostructures enhances signalling to bees. Nature 550, 469–474 (2017)
- University of Cambridge Research News, Petals produce a blue ‘halo’ that helps bees find flowers, 18 Oct 2017
- Van Raamsdonk, L.W.D., Eikelboom, W., De Vries, T. and Straathof, Th.P. (1997). THE SYSTEMATICS OF THE GENUS TULIPA L.. Acta Hortic. 430, 821-828
- Jerusalem Botanic Gardens, The Wildflowers of Israel, pdf resource
See full list of Individual Species References.
Please also refer to the General Bibliography and Online Resources.