Morphology delimits more species than molecular genetic clusters of invasive Pilosella. Moffat, C. E.; Ensing, D. J.; Gaskin, J. F.; De Clerck-Floate, R. A.; and Pither, J. American Journal of Botany, 102(7):1145–1159, July, 2015.
Morphology delimits more species than molecular genetic clusters of invasive Pilosella [link]Paper  doi  bibtex   
@article{moffat_morphology_2015,
	title = {Morphology delimits more species than molecular genetic clusters of invasive {Pilosella}},
	volume = {102},
	issn = {0002-9122, 1537-2197},
	url = {http://www.amjbot.org/cgi/doi/10.3732/ajb.1400466},
	doi = {10.3732/ajb.1400466},
	language = {English},
	number = {7},
	urldate = {2015-09-03},
	journal = {American Journal of Botany},
	author = {Moffat, C. E. and Ensing, D. J. and Gaskin, J. F. and De Clerck-Floate, R. A. and Pither, J.},
	month = jul,
	year = {2015},
	pages = {1145--1159},
}
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