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K. W. Hilu and K. Wright, “Systematics of Gramineae: A Cluster Analysis Study,” Taxon, Vol. 31, No. 1, 1982, pp. 9-36. doi:10.2307/1220585

has been cited by the following article:

• TITLE: Numerical Taxonomic Study of Some Tribes of Gramineae from Egypt

  AUTHORS: Ahmed Osman, Mohammed Zaki, Sohar Hamed, Nagwa Hussein

  KEYWORDS: Gramineae, Numerical Taxonomy, UPGMA, Cladistic Tree

  JOURNAL NAME: American Journal of Plant Sciences, Vol.2 No.1, March 4, 2011

  ABSTRACT: A systematic study for eleven tribes of Gramineae surveyed 34 characters including fruit morphology, fruit anatomy and palynology. The results were conducted to some numerical analysis aspects. On the basis of UPGMA (Unpaired Group Method of Average) clustering and PCA (Principal component analysis), the results show congruence between the UPGMA clustering and PCA method, in suggesting two major clads/groups and five subclads.